Red Sox’ Marcelo Mayer named International League Player of the Week

Top Red Sox prospect Marcelo Mayer has been named the International League Player of the Week for the week of April 21-27, Minor League Baseball announced on Monday.

Mayer put together an impressive week at the plate in Worcester’s series against the Syracuse Mets at Polar Park. Appearing in six games, the left-handed hitting 22-year-old went 9-for-20 (.450) with three doubles, three home runs, 12 RBIs, seven runs scored, three walks, and four strikeouts. He crushed a 401-foot homer on Tuesday, a 445-foot homer on Wednesday, and a 419-foot homer on Sunday.

After getting his first season at the Triple-A level off to a relatively slow start, Mayer has been on an offensive tear as of late and is now batting .280/.324/.548 with four doubles, seven home runs, an International League-leading 34 RBIs, 17 runs scored, one stolen base, seven walks, and 20 strikeouts through 23 games (102 plate appearances) for the WooSox thus far.

Among 134 qualified hitters in the International League, Mayer ranks 10th in slugging percentage, 12th in isolated power (.269), 23rd in OPS (.872), 35th in wOBA (.376), 37th in wRC+ (125), 41st in strikeout rate (19.6 percent), 43rd in swinging-strike rate (9.9 percent), 46th in batting average, and 58th in line-drive rate (25.3 percent), per FanGraphs.

On the other side of the ball, Mayer has added to his defensive profile by seeing playing time at three different positions to this point in the season. In addition to logging 135 innings at shortstop, the 6-foot-3, 188-pound infielder has made three starts at second base (a first for him professionally) and three starts at third base. Between those three spots, he has committed two errors in 75 total chances. He has also made one start at DH.

Mayer, the fourth overall pick in the 2021 draft coming out of Eastlake High School in Chula Vista, Calif., is currently regarded by Baseball America as the No. 3 prospect in Boston’s farm system and the No. 12 prospect in the sport. Shortly after making his second straight trip to the All-Star Futures Game last summer, he was promoted from Double-A Portland to Worcester for the first time in mid-August. Due to a lumbar strain in his lower back, however, he did not appear in a game for the WooSox and instead spent the remainder of the 2024 campaign on the injured list.

After standing out at his first big league camp in Fort Myers this spring, Mayer has seemingly carried over that momentum into the early stages of the season with Worcester and is showing how impactful he can be when healthy. As MassLive.com’s Katie Morrison-O’Day recently highlighted, the Red Sox are prioritizing durability when it comes to Mayer’s remaining development.

“Number one with Marcelo is his health. We want to see him withstand the ups and downs of the season from a health standpoint,” WooSox hitting coach Doug Clark told Morrison-O’Day. “And that’s not only physically, but mentally. These kids are not 30 years old. They’re very young, and they’re very susceptible to ups and downs and how they deal with them. And that’s where we come into play as coaches…but that’s something that he does well already.”

Mayer, who does not turn 23 until December, is undoubtedly on the cusp of being called up for his major league debut. Though he is currently blocked at shortstop by Trevor Story, at second base by Kristian Campbell, and at third base by Alex Bregman, Mayer — much like top outfield prospect Roman Anthony — could force the issue for the Red Sox if he continues to produce the way he has in recent weeks.

“He’s a tremendous talent,” Clark said of Mayer. “We can’t wait for him to get what he deserves, and that’s to be a champion up there with Boston.”

(Picture of Marcelo Mayer: Kelly O’Connor/sittingstill.smugmug.com)

Top Red Sox prospect Marcelo Mayer provides update on lower back injury that cut his 2024 season short

After missing the final two months of the 2024 season with a lumbar strain in his lower back, top Red Sox prospect Marcelo Mayer provided an update on his health in a recent conversation with MassLive.com’s Sean McAdam.

“I’m really good,” Mayer told McAdam. “Lower back’s great. I’ve been cleared for a while now, so I’ve been progressing swinging-wise, doing my stuff and working hard in the weight room, doing whatever I can to get my body in the best position for this upcoming season.”

As noted by McAdam, Mayer has not done much in terms of hitting so far this winter, though that will likely change soon.

“I’m still ramping up,” Mayer said. “But as far as that goes, my swing feels phenomenal right now. It feels like I haven’t missed a beat, which is weird because usually when I take a week off, I feel extremely rusty. But I took like two months off and I feel great right now. I’ll be ready to (be a full-go for the start of spring training).”

Mayer, the No. 10 prospect in Baseball America’s top 100 rankings, saw his season cut short by injury for a second straight year over the summer. The recently-turned 22-year-old was limited to 78 games between High-A Greenville and Double-A Portland in 2023 due to a lingering left shoulder impingement that ultimately shut him down that August.

Mayer broke camp with Portland this past spring and was putting together a stellar season at the plate through late July. The left-handed hitter netted 2024 Eastern League Post-Season All-Star honors by batting .307/.370/.480 with 28 doubles, eight home runs, 38 RBIs, 60 runs scored, 13 stolen bases, 30 walks, and 66 strikeouts in 77 games (335 plate appearances) for the Sea Dogs.

On the other side of the ball, Mayer drew encouraging reviews for his defensive ability at shortstop, where he started 65 games and committed 10 errors in 212 chances with Portland this year. The 6-foot-3, 188-pound infielder also made exactly one start at third base for the second season in a row.

In the weeks following his second straight trip to the All-Star Futures Game, Mayer hit a snag. He was placed on Portland’s injured list on August 1, two days after leaving a game early with what was initially described as lower back and upper glute muscle soreness. Since the issue was deemed minor, the Red Sox proceeded to activate and then promote Mayer to Triple-A Worcester on August 12 with the expectation that he would quickly find his way into the lineup.

The soreness in Mayer’s back, however, persisted. Further medical evaluation, including an MRI, led to the diagnosis of a lumbar strain. Rather than act aggressively, the Red Sox ended Mayer’s season before he could even notch his first Triple-A at-bat by placing him on Worcester’s injured list on August 20 and sending him to extended spring training in Fort Myers, Fla. so he could focus on his rehab.

“Extremely frustrating. As a player, of course you don’t want to get injured,” said Mayer. “I work extremely hard while I play to try to prevent injury. I think I’ve just been unlucky these past couple of years. I don’t think it’s something that happened because I didn’t do that or didn’t do this. I fell (resulting in the shoulder injury), something I can’t control. And the other one, I just had a little back problem.

“It’s obviously not ideal, but that’s the situation I’ve been put in and all I can do now is work my ass off (to rehab),” he continued. “I went down to Florida (in the fall) for a month, worked with the trainers there, did workouts, did some core stuff. They sent me home and I continued that training, and I’m pretty much a full-go right now. I’ll start hitting around the new year, which is more than enough time for me. You don’t need to be hitting all off-season.”

Originally selected by Boston with the fourth overall pick in the 2021 draft out of Eastlake High School (Chula Vista, Calif.), Mayer — barring a trade or other surprise move — is expected to open the 2025 campaign at Worcester. If he can stay on the field and quell any concerns about his durability, he should be able to put himself in a position to make his major league debut before the season draws to a close.

(Picture of Marcelo Mayer: Maddie Malhotra/Boston Red Sox/Getty Images)

Top Red Sox prospect Marcelo Mayer ‘likely done’ for season due to lumbar strain

Top Red Sox prospect Marcelo Mayer is likely done for the remainder of the season, as was first reported by Alex Speier of The Boston Globe.

Mayer, who has not played in a game since July 30 for Double-A Portland, is dealing with a lumbar strain in his lower back. The 21-year-old shortstop was promoted to Triple-A Worcester alongside fellow top prospects Roman Anthony and Kyle Teel on August 12 but was placed on the injured list last Tuesday.

As noted by Speier, Mayer is no longer with the WooSox and is instead rehabbing at the Red Sox’ Fenway South complex in Fort Myers, Fla. According to Brian Abraham, Boston’s director of player development, Mayer is expected to make a full recovery and can look forward to a normal offseason.

“We just got to a point where he really was plateauing with the improvement, and needed to get a little bit more deeper into what was going on,” Abraham told Speier. “Certainly unfortunate for Marcelo, but I think the good news is we know what the issue is.”

Originally selected by the Red Sox with the fourth overall pick in the 2021 draft, Mayer is currently ranked by Baseball America as the No. 1 prospect in Boston’s farm system and the No. 10 prospect in the sport. The Eastlake High School (Chula Vista, Calif.) product has represented the organization by suiting up for the American League in each of the last two All-Star Futures Games.

In 77 games for Portland this season, the left-handed hitting Mayer batted a stout .307/.370/.480 with 28 doubles, eight home runs, 38 RBIs, 60 runs scored, 13 stolen bases, 30 walks, and 66 strikeouts over 335 plate appearances. He made 65 starts at shortstop and one at third base, committing 11 errors in 216 total defensive chances.

Mayer was placed on the Sea Dogs’ injured list on August 1, two days after exiting Portland’s game with what was initially described as lower back and upper glute muscle soreness. The issue was deemed minor and the Red Sox proceeded to elevate Mayer to Worcester “with the expectation that he’d quickly find his way into the lineup,” according to Speier.

Mayer, however, hit a snag of sorts as the soreness in his lower back persisted. He was subsequently sent for an MRI, which led to the diagnosis of a lumbar strain. Rather than act aggressively, the Red Sox elected to send Mayer to extended spring training so that he could focus on his rehab.

“A really strong year from Marcelo. We’re going to take the positives out of it,” said Abraham. “Promoted to Triple-A, an opportunity to make some noise going into next year. We’re expecting a full recovery, so it will be all in the rear-view mirror by the time this offseason rolls around and he prepares for next year.”

If Mayer does not play again in 2024, this will mark the second straight year he has not been able to finish a season, which raises concerns about his durability. He was shut down last August with a left shoulder impingement he suffered while running the bases three months prior.

“I mean, obviously not ideal,” Red Sox manager Alex Cora said of Mayer when speaking with reporters (including MLB.com’s Ian Browne) on Monday. “He had a good season, did a good job. But honestly, I didn’t know. I’ll talk to [player development] and see what happens. But getting him right is the most important thing. There’s a lot of potential there. There’s things that we have to work on. [The] injuries, obviously, from my end, [are] concerning, to be honest with you. Just have to make sure we can keep him healthy.”

(Picture of Marcelo Mayer: Maddie Malhotra/Boston Red Sox/Getty Images)

Top Red Sox prospect Marcelo Mayer placed on Triple-A Worcester’s injured list

Top Red Sox prospect Marcelo Mayer has been placed on Triple-A Worcester’s 7-day injured list with low back inflammation, as was first reported by The Boston Globe’s Alex Speier.

Mayer is dealing with a lower back and upper glute muscle issue that has kept him sidelined for the last three weeks. The 21-year-old shortstop was promoted from Double-A Portland to Worcester alongside fellow top prospects Roman Anthony and Kyle Teel last Monday but has not yet appeared in a game for the WooSox.

Originally selected by the Red Sox with the fourth overall pick in the 2021 draft out of Eastlake High School (Chula Vista, Calif.), Mayer is currently ranked by Baseball America as the No. 1 prospect in Boston’s farm system and the No. 10 prospect in the sport. He has represented the organization by suiting up for the American League in each of the last two All-Star Futures Games.

In 77 games for Portland this season, the left-handed hitting Mayer batted .307/.370/.480 with 28 doubles, eight home runs, 38 RBIs, 60 runs scored, 13 stolen bases, 30 walks, and 66 strikeouts over 335 plate appearances. He spent nine days (August 1-10) on the Sea Dogs’ injured list before being activated and joining the WooSox at Polar Park last Tuesday.

“I’m feeling much better,” Mayer told reporters (including Speier) that same afternoon. “My lower back and my upper glute was just bothering me a little bit. I missed a week in Somerset due to pec soreness and then my back kind of flared up on me. So we’ve just kind of been being cautious with it.  Don’t want to play when my back is hurt and then I end up getting more hurt than I need to, so we’ve just been taking it pretty slow, but I feel good.”

As noted by Speier, the decision to place Mayer on the injured list was made in part to create an opening on Worcester’s roster. Still, the fact of the matter is that Mayer is facing yet another lengthy late-season absence due to injury. He missed the final six weeks of the 2023 campaign with a left shoulder impingement.

(Picture of Marcelo Mayer: Maddie Malhotra/Boston Red Sox/Getty Images)

Red Sox to promote top prospects Marcelo Mayer, Roman Anthony, and Kyle Teel to Triple-A Worcester

The Red Sox are promoting their top three prospects — shortstop Marcelo Mayer, outfielder Roman Anthony, and catcher Kyle Teel — from Double-A Portland to Triple-A Worcester, as was first reported by The Boston Globe’s Alex Speier.

Mayer, Anthony, and Teel are currently regarded by Baseball America as the Nos. 10, 18, and 31 prospects in the sport, respectively. Dubbed “The Big Three” within Boston’s farm system, the talented trio represented the organization at last month’s All-Star Futures Game in Arlington, Texas. They are expected to join the WooSox and make their Triple-A debuts on Tuesday, when the club opens a six-game series against the Lehigh Valley IronPigs at Polar Park.

Mayer, the longest-tenured of the three, was originally selected by the Red Sox with the fourth overall pick in the 2021 draft out of Eastlake High School (Chula Vista, Calif.). The left-handed hitting 21-year-old batted .307/.370/.480 with 28 doubles, eight home runs, 38 RBIs, 60 runs scored, 13 stolen bases, 30 walks, and 66 strikeouts in 77 games (335 plate appearances) for Portland this season. As noted by Speier, he was recently sidelined by minor hip soreness but was activated from the injured list over the weekend and should be ready to play.

Defensively, Mayer saw the vast majority of his playing time with Portland this season come at shortstop. The 6-foot-3, 188-pounder logged 543 innings at short for the Sea Dogs, committing 10 errors in 212 chances. He also started one game at third base and nine at DH.

Anthony, meanwhile, was taken by the Red Sox with the 79th overall selection in the 2022 draft out of Stoneman Douglas High School (Parkland, Fla). The left-handed hitting 20-year-old slashed .269/.367/.489 with 20 doubles, three triples, 15 home runs, 45 RBIs, 60 runs scored, 16 stolen bases, 48 walks, and 96 strikeouts in 84 games (376 plate appearances) for Portland this season. He is currently riding an 11-game hitting streak.

On the other side of the ball, Anthony had been serving as the Sea Dogs’ primary center fielder leading up to Sunday’s promotion. The 6-foot-2, 200-pounder logged 489 1/3 innings in center for Portland, committing three errors in 132 chances. He also made two starts in left field (where he recorded two outfield assists), one start in right field, and 15 starts at DH.

Unlike Mayer and Anthony, Teel is in just his first full professional season after being selected by the Red Sox with the 14th overall pick in last summer’s draft out of the University of Virginia. The left-handed hitting 22-year-old batted .298/.390/.462 with 20 doubles, 11 home runs, 60 RBIs, 65 runs scored, nine stolen bases, 48 walks, and 87 strikeouts in 84 games (382 plate appearances) for Portland this season.

From behind the plate, Teel started 57 games at catcher for the Sea Dogs and threw out 18 of 91 would-be base stealers. The 6-foot, 190-pound backstop has shown “major improvement in his receiving, game-calling, and throwing since the beginning of July,” according to Speier.

After spending the better part of the last four months at Double-A, Mayer, Anthony, and Teel will make the highly-anticipated jump to Triple-A this week. Put another way, they are all just one call away from reaching the major leagues.

(Picture of Marcelo Mayer: Maddie Malhotra/Boston Red Sox/Getty Images)

Top Red Sox prospect Marcelo Mayer placed on Double-A Portland’s 7-day injured list

Top Red Sox prospect Marcelo Mayer has been placed on Double-A Portland’s 7-day injured list, per the club’s MiLB.com transactions log.

Mayer was removed in the third inning of Portland’s game against Erie on Tuesday and was also absent from Wednesday’s lineup. The 21-year-old shortstop is dealing with hip irritation but is not expected to be sidelined for long, according to The Boston Herald’s Mac Cerullo.

Mayer, who is currently ranked by Baseball America as the No. 1 prospect in Boston’s farm system and the No. 10 prospect in the sport, is enjoying a bounceback season with Portland after being shut down with a left shoulder impingement last summer. In 77 games for the Sea Dogs, the left-handed hitter has batted .307/.370/.480 with 28 doubles, eight home runs, 38 RBIs, 60 runs scored, 13 stolen bases, 30 walks, and 66 strikeouts over 335 plate appearances.

Defensively, Mayer has unsurprisingly seen the majority of his playing time this season come at shortstop. The 6-foot-3, 188-pounder has logged 543 innings at short for Portland, committing 10 errors in 212 chances. He has also started one game at third base and nine at DH.

Originally selected with the fourth overall pick in the 2021 amateur draft out of Eastlake High School (Chula Vista, Calif.), Mayer joined Rafael Devers and Xander Bogaerts as the only Red Sox position prospects to be take part in multiple All-Star Futures Games when he suited up for the American League at Globe Life Field in Arlinton, Texas last month.

Mayer, who does not turn 22 until December, was expected to be promoted to Triple-A Worcester alongside fellow “Big Three” prospects Roman Anthony and Kyle Teel in the very near future. He will now have to wait a little bit longer for that promotion since he is not eligible to be activated from the injured list until next Thursday, August 8, at the earliest.

With Mayer on the shelf for the time being, infielder Ahbram Liendo was promoted from High-A Greenville to Portland on Thursday. The 20-year-old Venezuelan has slashed .204/.300/.271 with four doubles, three triples, three home runs, 25 RBIs, 32 runs scored, 24 stolen bases, 38 walks, and 125 strikeouts in 76 games (323 plate appearances) for the Drive this season. He has made 26 starts at second base, 39 starts at third base, and 10 starts at shortstop.

(Picture of Marcelo Mayer: Richard Rodriguez/Getty Images)

Red Sox’ Kyle Teel rips two doubles at All-Star Futures Game

Red Sox catching prospect Kyle Teel delivered a standout performance in the 2024 All-Star Futures Game at Globe Life Field in Arlington, Texas on Saturday afternoon.

Teel went 2-for-2 with a pair of doubles in the American League’s 6-1 loss to the National League, making him the only player on either side to record multiple hits in the seven-inning exhibition.

Representing the Red Sox alongside fellow top prospect Marcelo Mayer — who went 0-for-2 with two groundouts — in the 25th annual Futures Game, Teel entered the contest as a defensive replacement for starting catcher Samuel Basallo in the fifth inning. The 22-year-old backstop was unable to throw out Dylan Crews stealing second base in the top half of the frame but made up for it with his first plate appearance in the latter half.

With one out and the bases empty, Teel found himself matched up against Reds pitching prospect Rhett Lowder. The left-handed hitter worked a 2-2 count before barreling an 86.3 mph slider from the right-hander to deep left-center for an opposite-field double. The ball left his bat at 98.8 mph and traveled 379 feet over the outstretched glove of National League center fielder Druw Jones.

Teel advanced to third base on a fielding error but was left stranded there. He got his next opportunity with one out in the bottom of the seventh, this time pitted against another righty in the Pirates’ Bubba Chandler. Though he fell behind in the count at 1-2, Teel kept things rolling by lacing an 86.3 mph fastball down the left-field line for his second double of the day.

Teel was, yet again, left in scoring position as Chandler recorded the game’s final two outs to seal the 6-1 victory for the National League. Reds prospect Cam Collier was named Futures Game MVP after going 1-for-2 with a 409-foot solo home run.

Selected by the Red Sox with the 14th overall pick in last year’s draft out of Virginia, Teel is currently ranked by Baseball America as the No. 3 prospect in Boston’s farm system and the No. 27 prospect in the sport. He has batted .298/.384/.455 with 16 doubles, eight home runs, 49 RBIs, 53 runs scored, six stolen bases, 33 walks, and 70 strikeouts in 65 games (294 plate appearances) for Double-A Portland to begin his first full professional season.

Defensively, Teel has unsurprisingly seen all of his playing time on the field this season come at catcher. The 6-foot, 190-pounder has logged 380 innings behind the plate for the Sea Dogs, allowing three passed balls and throwing out 11 of 64 possible base stealers in that time.

Along with Mayer and outfielder Roman Anthony, who won the inaugural Future Skills Showcase on Saturday, Teel is the third member of the Red Sox’ Big Three. The top three prospects in the organization are knocking on the door for a promotion to Triple-A Worcester but are all planning on returning to Portland after the All-Star break, according to The Boston Globe’s Alex Speier.

“We still have half a season left,” Teel told Speier. “This is a really cool journey. [The Futures Game] is a little sidequest we get to do midway through our season, but we’ve still got to compete for the playoffs with the Sea Dogs. The only thing that we can really control is playing for the Sea Dogs right now. That’s it. So we want to do that the best that we can and develop the most that we can.”

(Picture of Kyle Teel: Richard Rodriguez/Getty Images)

Top prospects Roman Anthony, Marcelo Mayer, and Kyle Teel to represent Red Sox in Futures Game festivities

The Big Three of outfielder Roman Anthony, shortstop Marcelo Mayer, and catcher Kyle Teel have been invited to represent the Red Sox at the All-Star Futures Game in Arlinton, Texas on July 13.

Mayer and Teel will play for the American League in the Futures Game itself while Anthony (an inactive selection) is slated to take part in the first-ever MLB Futures Skills Showcase — a three-round competition of hitting challenges — that follows the seven-inning exhibition at Globe Life Field.

Anthony, Mayer, and Teel have spent the entirety of the 2024 season together at Double-A Portland and are currently regarded by Baseball America as The Nos. 1, 2, and 3 prospects in Boston’s farm system, respectively. All three are represented in Baseball America’s top 100 prospects rankings as well.

Anthony has overtaken Mayer for the top spot in the organization. The left-handed hitting 20-year-old is batting .246/.358/.441 with 15 doubles, two triples, eight home runs, 24 RBIs, 35 runs scored, six stolen bases, 36 walks, and 66 strikeouts in 60 games (260 plate appearances) for Portland this season. He has made 46 starts in center field and one in right field.

Mayer, who suited up for the American League in Seattle last year, joins Rafael Devers and Xander Bogaerts as the only Red Sox position prospects to be named to multiple Futures Games. The left-handed hitting 21-year-old is slashing .307/.371/.479 with 25 doubles, seven home runs, 36 RBIs, 54 runs scored, 13 stolen bases, 27 walks, and 57 strikeouts in 68 games (299 plate appearances) for the Sea Dogs this season. He has made 56 starts at shortstop and one at third base.

As noted by The Boston Globe’s Alex Speier, Mayer was scratched from Portland’s lineup on Monday after experiencing back stiffness during batting practice. He may sit again on Tuesday, but the issue is still considered minor and one that is not expected to keep the former fourth-overall pick out for long.

Teel, meanwhile, is enjoying a strong first full season in pro ball after being selected by the Red Sox with the 14th overall pick in last year’s draft out of Virginia. The left-handed hitting 22-year-old is batting .302/.390/.464 with 14 doubles, eight home runs, 48 RBIs, 51 runs scored, five stolen bases, 31 walks, and 67 strikeouts in 60 games (272 plate appearances) for Portland. He has thrown out 10 of 60 possible base stealers in his 40 starts behind the plate.

All three of Anthony, Mayer, and Teel remain in Portland for the time being but are undoubtedly nearing a promotion to Triple-A Worcester. It remains to be seen if they will move up as a group or individually, though Red Sox director of player development Brian Abraham acknowledged in a recent conversation with Speier that “the conversations are happening constantly.”

(Picture of Marcelo Mayer: Maddie Malhotra/Boston Red Sox/Getty Images)

Top Red Sox prospect Marcelo Mayer off to strong start with Double-A Portland

After a winter full of skepticism, shortstop Marcelo Mayer is using the early stages of the minor-league season to show why he should still be considered the top prospect in the Red Sox organization.

To begin the 2024 campaign, Mayer has strung together a seven-game hitting streak for Double-A Portland. Following Sunday’s 9-5 win over the Reading Fightin Phils, the left-handed hitter is now 10-for-28 (.357) with one double, one home run, five RBIs, seven runs scored, two stolen bases, two walks, and eight strikeouts for the Sea Dogs.

On the other side of the ball, Mayer has seen all of his playing time on the field to this point in the season come at shortstop. The 6-foot-3, 188-pounder has logged a team-leading 50 innings at short thus far and has yet to commit an error.

Still just 21 years old, Mayer really couldn’t ask for a better start after what went down last season. The former fourth overall pick in the 2021 draft suffered a left shoulder impingement while with High-A Greenville early in the year and attempted to play through the discomfort. He managed to make it to Portland and represent the Red Sox at the All-Star Futures Game over the summer, but he struggled mightily at the plate before going on the injured list — and ultimately being shut down — in the first week of August.

Mayer received a pain-killing injection in September and spent his offseason rehabbing at home in Chula Vista, Calif., and at the Red Sox’ JetBlue Park complex in Fort Myers, Fla. He focused on building strength back up in that injured shoulder and was deemed a “full go” for Boston’s rookie development program in January.

Though he did not receive an invite to major-league spring training, Mayer got into two Grapefruit League games (as well as the Spring Breakout prospect showcase) and made his impact felt in other areas before breaking camp with Portland for the start of his third full professional season. As Red Sox director of player development Brian Abraham recently told MLB.com’s Ian Browne, Mayer appears to be benefitting from the work he put in during the offseason.

“He worked incredibly hard throughout his progression in the offseason and spring training to prepare for the 2024 season,” said Abraham. “Whether that be rehab-related, strength-related, on-field performance-related, we saw a player working with an intent to be an impact player this season and moving forward. It’s been great to see him continue to mature both on and off the baseball field.”

Mayer, who does not turn 22 until December, is currently regarded by MLB Pipeline as the No. 1 prospect in Boston’s farm system and the No. 15 prospect in all of baseball. If he continues to produce the way he has been to start the season, it will not be long until he garners consideration for a promotion to Triple-A Worcester. From there, the big-leagues are only one call away.

“Continue to become an improved all-around player,” Abraham said when asked about the organization’s developmental goals for Mayer this season. “Improve his range in the field and keep looking to impact the baseball. Have the continued ability to add good weight and strength. Offensively, it’s focusing on pitches within the zone he can do damage with. In simpler terms, increasing his walk percentage and decreasing his strikeout percentage will allow him to be a better overall hitter and maximize his potential.”

Mayer, for his part, explained his own mindset when speaking with WEEI.com’s Rob Bradford on the ‘Baseball Isn’t Boring’ podcast earlier this month. He did so while emphasizing that his shoulder felt great.

“I think I do feel close, but obviously I need to handle business here (in Double-A) first. I need to handle business in Triple-A. So there is still two levels to go,” Mayer said. “I feel close. I feel ready to go, excited for the new year. I’m ready to show myself and what I’m able to do. Again, I’m healthy.”

(Picture of Marcelo Mayer: Maddie Malhotra/Boston Red Sox/Getty Images)

Top Red Sox prospect Marcelo Mayer ‘a full go’ for upcoming rookie development program

Top Red Sox prospect Marcelo Mayer is a “full go” and will be part of the club’s rookie development program that gets underway next week, according to WEEI.com’s Rob Bradford.

Mayer missed the final six-plus weeks of the 2023 minor-league season due to a left shoulder injury he suffered much earlier in the year and attempted to play through. As the 21-year-old shortstop explained to Bradford back in September, it occurred on the road in early May, while he was still playing with High-A Greenville.

“It was May 7, we were playing in High-A in Asheville,” Mayer recalled on Audacy’s ‘Baseball Isn’t Boring’ podcast. I was 3-for-3 and I needed a triple for the cycle. I ended up hitting a ball in the gap. I tried to leg it out for the triple. I ended up stumbling past second base and fell. I didn’t really feel it on impact and then the next day I wake up and can’t lift my shoulder at all. I ended up taking that week off, come back playing a little too soon because the competitor in me wanted to play and didn’t want to rest. So I got used to playing hurt and ever since then it became a cycle and never really got better.”

As he alluded to, Mayer took some time off following that game in Asheville and did not return to action until May 14. To that point in the season, the left-handed hitter had batted a stout .337/.414/.582 with 10 doubles, one triple, four home runs, 23 RBIs, 17 runs scored, four stolen bases, 13 walks, and 24 strikeouts in 23 games (111 plate appearances) with the Drive.

Upon being inserted back into Greenville’s lineup, however, Mayer went just 9-for-47 (.192) with three homers and 11 runs driven in over his next 12 games. Despite those struggles, he was promoted to Double-A Portland on May 30. Things did not get any easier from there.

Facing more advanced pitching in the upper-minors for the first time in his professional career, Mayer slumped to a .189/.254/.355 slash line in 43 games with (190 plate appearances) with Boston’s Eastern League affiliate. He still managed six home runs and 20 RBIs in that stretch, but something was clearly amiss.

After representing the Red Sox at July’s All-Star Futures Game in Seattle, for instance, Mayer managed just 10 hits in 14 games with the Sea Dogs. Once the calendar flipped from July to August, he went 0-for-9 with four strikeouts in what would go down as his final two games of the year against the Bowie BaySox.

“It’s a good learning lesson on my end,” Mayer said. “Looking back at it, I should have definitely taken care of it. You’re here to play and obviously it didn’t work out for me because I thought it was going to get better over time, but it just kept getting worse and worse and worse so I decided to say something to the trainers.”

On August 5, Mayer was placed on Portland’s 7-day injured list with left shoulder inflammation. A little over a month later, the Red Sox elected to shut down Mayer for the remainder of the year, with the goal of getting him back to 100 percent for a normal offseason the main motivator behind that decision.

“When it comes to my swing, my swing was just giving out every single time,” explained Mayer. “The littlest thing can impact your swing and you start compensating somewhere else, which is not a good thing, which is why I think I learned a lot from this experience. But as a player there is one place you want to be and it’s on the field.”

According to The Boston Globe’s Alex Speier, who also compiles the Red Sox’ organizational rankings for Baseball America, Mayer was ultimately diagnosed with a left shoulder impingement, which required a pain-killing injection in September.

In a conversation with The Athletic’s Jen McCaffrey, Red Sox director of player development said that playing in the Arizona Fall League was “a possibility or option” for Mayer, but the club decided against it. Instead, as noted by Speier, the California native spent the fall rehabbing in Fort Myers before returning home to Chula Vista on a strength program.

To that end, it now appears as though Mayer is back at full strength. That being the case because — in the words of Bradford — his shoulder is “not a hindrance.”

Originally selected by the Red Sox with the fourth overall pick in the 2021 amateur draft out of Eastlake High School, Mayer comes into the new year ranked by both Baseball America and MLB Pipeline as the No. 1 prospect in Boston’s farm system.

While the 2023 campaign ended on a down note offensively, Mayer still managed to impress in other areas of the game. In separate polls ran by Baseball America, the 6-foot-2, 188-pound infielder was tabbed by league managers as the best defensive shortstop in both the Eastern and South Atlantic Leagues after committing a total of 10 errors over 602 innings at the all-important position between his stops at Greenville and Portland last season.

Though his name has frequently come up in trade rumors this winter, Mayer — who does not turn 22 until December — is expected to return to Portland for the start of the 2024 season. If he remains in the organization and stays healthy, Mayer could be on the fast track to making his major-league debut at some point later this year depending on how things shake out.

In the interim, Mayer and several other top prospects will take part in the Red Sox’ aforementioned rookie development program, which is scheduled to begin at Fenway Park next Monday. This annual five-day program typically consists of workouts at an indoor facility at Boston College, media training, and community service around the city, among other endeavors.

To complement the program, Mayer and nine other invitees (Roman Anthony, Kyle Teel, Richard Fitts, Chase Meidroth, Nick Yorke, Wikelman Gonzalez, Luis Perales, Nathan Hickey, and Justin Slaten) are also scheduled to attend Winter Weekend — the Red Sox’ annual fan fest — at the end of the week in Springfield.

(Picture of Marcelo Mayer: Maddie Malhotra/Boston Red Sox/Getty Images)