Red Sox outfield prospect Wilyer Abreu strains left hamstring

Red Sox outfielder Wilyer Abreu suffered a left hamstring strain in the seventh inning of Sunday’s 4-1 League win over the Marlins at JetBlue Park.

Abreu entered the game in the top of the seventh as a defensive replacement for starting right fielder Alex Verdugo. The left-handed hitter led off the bottom half of the frame with a line-drive single off Marlins reliever Devin Smeltzer, but he rounded the first base bag awkwardly and was in clear discomfort as a result.

After getting checked out by Red Sox manager Alex Cora and a member of the team’s training staff, Abreu was lifted for pinch-runner Stephen Scott. The 23-year-old finished his day going 1-for-1 with a base hit in his lone plate appearance.

“Right before he stepped on the bag, he felt it,” Cora told reporters (including MLB.com’s Ian Browne. “He felt it. He stopped right away, so that’s good. But he’ll be out for a while.”

Abreu becomes the third member of the Red Sox to sustain some sort of hamstring injury within the last week, joining catcher Connor Wong (Thursday) and left-hander James Paxton (Friday). Both Wong and Paxton have since been diagnosed with low-grade strains. It’s likely that more information regarding the severity of Abreu’s strain will become available on Monday.

The Red Sox originally acquired Abreu (and fellow prospect Enmanuel Valdez) from the Astros in the trade that sent catcher Christian Vazquez to Houston last August. Abreu closed out the 2022 season with Double-A Portland and batted .242/.399/.375 with five doubles, four home runs, 19 RBIs, 25 runs scored, eight stolen bases, 36 walks, and 45 strikeouts across 40 games (168 plate appearances) with the Sea Dogs while seeing playing time at all three outfield positions.

After playing in the Arizona Fall League, Abreu was added to the Red Sox’ 40-man roster in November in order to receive protection from the Rule 5 Draft. The native Venezuelan is currently regarded by Baseball America as the No. 22 prospect in Boston’s farm system.

Prior to getting injured on Sunday, Abreu had gotten his first spring with the Red Sox off to a solid start by going 4-for-12 (.333) with a triple, a home run, four runs driven in, five runs scored, two walks, and four strikeouts in seven Grapefruit League games. He crushed a grand slam in Thursday’s 15-3 rout of the Phillies.

As of now, it remains to be seen just how much time Abreu will miss because of this hamstring strain. Abreu, who turns 24 in June, only has 129 career games at the Double-A level under his belt and is expected to return to Portland for the start of the 2023 minor-league season. Because he is on the 40-man roster, though, any sort of absence could have an affect on Boston’s outfield depth in the upper-minors to begin the year.

(Picture of Wilyer Abreu: Doug Murray/Icon Sportswire via Getty Images)

Red Sox sign left-hander Cam Booser to minor-league deal

The Red Sox have signed free agent left-hander Cam Booser to a minor-league contract, per the club’s transactions log on MLB.com.

Booser, 30, spent the first half of the 2022 season in the Diamondbacks organization after signing a minors pact with Arizona last February. The lefty posted a 6.48 ERA and 6.60 FIP with 30 strikeouts to 22 walks in 19 relief appearances (25 innings) for Double-A Amarillo before being released by the Sod Poodles in July.

Less than a month after getting cut loose by the Diamondbacks, Booser latched on with the Lancaster Barnstormers of the independent Atlantic League. He appeared in 13 games for Lancaster down the stretch and pitched to a 4.63 ERA with 15 strikeouts to six walks over 11 2/3 innings of work.

A native of the Seattle-area, Booser has had an interesting journey in professional baseball. He originally attended the esteemed Oregon State University, but he underwent Tommy John surgery after his freshman year and missed the entirety of his sophomore season as a result.

After transferring to Central Arizona College as a junior, Booser was passed over in the 2013 amateur draft. He then signed with the Twins as an undrafted free agent and made his pro debut in the Gulf Coast League that August. Booser did not graduate past the rookie-ball level until the onset of the 2015 campaign.

In 32 appearances for Class-A Cedar Rapids that year, Booser forged a 3.72 ERA and 3.57 xFIP to go along with 64 strikeouts to 40 walks across 46 2/3 innings of relief. He was named a Midwest League All-Star for his efforts, but that success did not carry over into 2016. Booser instead struggled to an 8.53 ERA (6.24 FIP) in 21 total outings (25 1/3 innings) between Cedar Rapids and High-A Fort Myers.

The following June, Booser was handed down a 50-game suspension for testing positive for a drug of abuse for the second time (he was previously suspended for testing positive for marijuana in 2015). Over the course of the 2017 season, Booser pitched in just three games. He elected to retire from baseball that November.

“I needed a break,” Booser told The Athletic’s Zach Buchanan back in April. “I needed, for my own mental side, to get away and figure out who I was off the field.”

And so Booser returned home to join a carpenters union. He worked construction around northwest Washington state and gave baseball lessons on the side.

In late 2020, Booser got the itch to pitch again and began throwing off a mound at a local facility. He started to work with current Mets pitching coordinator and former Driveline Baseball instructor Kyle Rogers before landing a contract with the Chicago Dogs of the independent American Association in July 2021.

Booser impressed with Chicago (1.93 ERA in 21 1/3 innings) and leveraged his performance there into a minor-league deal with the Diamondbacks as soon as he was officially released by the Twins last winter. During his time with Arizona’s Double-A affiliate, the 6-foot-3, 225-pound southpaw sat in the high-90s and topped out at 100 mph with his four-seam fastball. He also works with a low-90s cutter and mid-80s slider.

Booser, who turns 31 in May, has been assigned to Double-A Portland. He should provide Sea Dogs manager Chad Epperson with another left-handed relief option to complement the likes of Skylar Arias and Brendan Cellucci, among others.

(Picture of Cam Booser: John E. Moore III/Getty Images)

Red Sox pitching prospect Brendan Cellucci ended his 2022 season on a strong note

The Red Sox have a number of intriguing left-handed pitching prospects within their farm system. Brendan Cellucci is among them.

Cellucci, now 24, was originally selected by Boston in the 12th round of the 2019 amateur draft out of Tulane University. The Philadelphia-area native signed with the club for $345,000 and made his professional debut for short-season Lowell later that summer.

What would have been Cellucci’s first full season in pro ball was disrupted by the COVID-19 pandemic in 2020. He then spent the entirety of the 2021 minor-league campaign with High-A Greenville and also pitched for the Scottsdale Scorpions of the Arizona Fall League.

After taking part in the Red Sox’ Winter Warm-Up minicamp last January, Cellucci returned to Greenville for the start of the 2022 season. The left-hander began the year in the Drive’s bullpen, but he struggled to the tune of an 11.70 ERA over nine relief appearances (10 innings pitched) out of the gate.

Three days following another tough showing against the Rome Braves at Fluor Field on May 8, Cellucci did something he had not done since pitching on Cape Cod in 2019: he started a game. On May 11, Cellucci served as an opener for Greenville and struck out four of the six batters he faced over two scoreless, no-hit frames on the road against the Asheville Tourists.

For the next month, Cellucci continued to open games for the Drive every three to four days. In 10 starts from May 11-June 12, he produced a 1.83 ERA and .141 batting average against to go along with 30 strikeouts to 14 walks across 19 2/3 total innings of work.

Though he found success in an opening role, Cellucci returned to the Greenville bullpen in mid-June. The results (such as a 7.04 ERA in his next 13 outings) were not pretty at first, but the lefty was able to settle down a bit following a five-run blowup against Rome on August 3.

Against that same Braves team four days later, Cellucci worked a scoreless seventh inning. He then proceeded to keep the opposition off the scoreboard in eight of his next 10 appearances, putting up a 1.06 ERA and .155 batting average against with 22 strikeouts to six walks over 17 innings pitched altogether.

On September 16, Cellucci earned a late-season promotion to Double-A Portland. He appeared in two games for the Sea Dogs down the stretch and did not surrender run while recording three punchouts and zero walks in 2 1/3 frames of relief.

All told, it was an up-and-down season for Cellucci. Between Greenville and Portland, he wound up posting a 4.34 ERA and 4.64 FIP with a strikeout-to-walk ratio of 85:44 over 45 total appearances (10 starts) spanning 64 1/3 innings. Opponents hit .238/.374/.340 with six home runs in 290 plate appearances against him.

According to FanGraphs, 30 minor-league pitchers in the Red Sox organization accrued at least 60 innings on the mound last year. Among them, Cellucci ranked second in strikeouts per nine innings (11.89), 30th in walks per nine innings (6.16), fourth in strikeout rate (29.3 percent), 30th in walk rate (15.2 percent), 11th in batting average against, 26th in WHIP (1.55), seventh in line-drive rate (18.4 percent), ninth in groundball rate (48 percent), ninth in swinging-strike rate (13 percent), 14th in ERA, 18th in xFIP (4.61), and 20th in FIP.

Cellucci could have been added to Boston’s 40-man roster at the end of the season in order to receive protection from the Rule 5 Draft. The Red Sox, however, left Cellucci unprotected and he unsurprisingly did not get scooped up by another team on the final day of the Winter Meetings in December.

While he is not considered to be one of the top relief prospects in Boston’s farm system, Cellucci does have potential. His strikeout numbers are indicative of that, though his struggles to command the strike zone at times do lead to some concerns surrounding his long-term outlook.

Per his SoxProspects.com scouting report, Cellucci is a three-pitch pitcher who possesses a max-effort, over the top delivery. The 6-foot-4, 211-pound southpaw operates with a 91-93 mph fastball that tops out at 95 mph (and has topped out at 97 mph in the past), an 88-90 mph cutter, and an 82-88 mph slider.

Cellucci, who turns 25 in June, is projected to return to Portland for the upcoming 2023 season. He will once again be eligible for the Rule 5 Draft next winter, but will presumably look to make strides with the Sea Dogs in the meantime.

(Picture of Brendan Cellucci: Kelly O’Connor/sittingstill.smugmug.com)

Former Red Sox lefty Kyle Hart agrees to minor-league deal with Phillies

Former Red Sox left-hander Kyle Hart has agreed to terms on a minor-league contract with the Phillies, according to MassLive.com’s Chris Cotillo. It is unclear if the deal comes with an invite to major-league spring training.

Hart, 30, was originally selected by Boston in the 19th round of the 2016 amateur draft out of Indiana University Bloomington. As an unheralded senior, the Ohio native signed with the club for a modest $5,000 and made his professional debut in the rookie-level Gulf Coast League that summer.

After working his way up the minor-league ladder in 2017 and 2018, Hart put together an impressive 2019 campaign in which he posted a 3.52 ERA with 140 strikeouts to 53 walks in 27 outings (24 starts) spanning 156 innings of work between Double-A Portland and Triple-A Pawtucket. That November, the Red Sox added the southpaw to their 40-man roster in order to prevent him from being selected in the Rule 5 Draft.

Hart entered the COVID-shortened 2020 season ranked by Baseball America as the No. 29 prospect in Boston’s farm system. He made his major-league debut that August, but struggled to a 15.55 ERA (19 earned runs in 11 innings) across four appearances (three starts) and was outrighted off the Sox’ 40-man roster in the fall of that year.

Since then, Hart has spent the last two seasons pitching in the minors. The 6-foot-5, 200-pound hurler forged a 4.22 ERA with Worcester in 2021 and followed that up by producing a 5.25 ERA with 74 strikeouts to 33 walks in 82 1/3 innings between the WooSox and Sea Dogs last year before reaching minor-league free agency for the first time.

In agreeing to a minors pact with Philadelphia, Hart will be joining just the second organization of his professional career. With that being said, it should be mentioned that Phillies president of baseball operations Dave Dombrowski was at the helm in Boston when Hart was drafted by the Red Sox in 2016.

(Picture of Kyle Hart: Billie Weiss/Boston Red Sox/Getty Images)

Red Sox sign left-hander Skylar Arias to minor-league deal

The Red Sox have signed free agent left-hander Skylar Arias to a minor-league contract for the 2023 season, per the club’s transactions log. Arias has been assigned to Double-A Portland.

Arias, 25, was originally selected by Cleveland in the 24th round of the 2016 amateur draft out of Tallahassee Community College. The Florida native spent parts of seven seasons in the Guardians organization before being released last June.

Shortly after being cut loose by the Guardians, Arias signed a minors pact with the White Sox. The 6-foot-3, 204-pound southpaw pitched across three different levels in 2022, though 24 of his 26 relief appearances were for Chicago’s High-A affiliate in Winston-Salem, N.C. He posted a 3.91 ERA and 3.88 FIP with 37 strikeouts to 17 walks over 23 innings of work for the Dash before becoming a free agent again in November.

Among the 238 pitchers who accrued at least 20 innings in the South Atlantic League last year, Arias ranked 11th in strikeouts per nine innings (14.48), 20th in strikeout rate (35.6 percent), and 18th in batting average against (.171), per FanGraphs. He also walked more than 16 percent of the batters he faced.

Arias, who turns 26 in June, has some experience above the High-A level. He made one appearance for Double-A Birmingham last August, allowing three runs (two earned) in a third of an inning. In 2021, the lefty forged a 6.92 ERA and 5.01 FIP with 53 strikeouts to 35 walks across 36 outings spanning 40 1/3 frames of relief for Double-A Akron.

According to a Baseball America scouting report from December 2021, Arias “deploys a trio of pitches in his low-90s fastball, low-80s slider and low-to-mid-80s changeup. He has an unusual four-seam fastball that’s heavy with side spin, but lacks hop, moving almost like a sinker from a flat vertical approach angle. This allows the pitch to play above his below-average velocity.

“His slider is far and away his go-to swing-and-miss offering, with a whiff rate above 50 percent despite accounting for a quarter of his usage,” it continues. “From a shape perspective his changeup may be his most intriguing pitch. It sits 82 mph with average velocity separation from his fastball. He does an excellent job of killing the lift on the pitch, which gives it plenty of tumble. It also has hellacious run.”

Arias becomes the latest left-hander the Red Sox have signed to a minor-league deal in recent weeks, joining the likes of Matt Dermody and Ryan Sherriff. Unlike Dermody and Sherriff, however, it does not appear as though Arias will receive an invite to major-league spring training.

(Picture of Fenway Park: Adam Glanzman/Getty Images)

Red Sox re-sign Sterling Sharp to minor-league deal

The Red Sox have re-signed right-hander Sterling Sharp to a minor-league contract for the 2023 season, per his MiLB.com transactions log.

Sharp, 27, first signed with Boston as a minor-league free agent last August after spending the first half of the 2022 season in the Nationals organization. The lanky righty made seven starts for Double-A Portland down the stretch and posted a 3.18 ERA (3.59 FIP) with 31 strikeouts to 12 walks over 34 innings of work.

Washington originally selected Sharp in the 22nd round of the 2016 amateur draft out of Drury University (Springfield, Mo). The Michigan native rose through the prospect ranks in the Nationals’ farm system before being taken by the Marlins in the major-league phase of the 2019 Rule 5 Draft.

Sharp made his big-league debut for Miami the following August. He allowed six earned runs in 5 1/3 innings (10.13 ERA) out of the Marlins bullpen before being designated for assignment on Aug. 27. He was ultimately returned to the Nationals for $50,000 after clearing waivers.

Since that time, Sharp has made 34 appearances (27 starts) at the Triple-A level and 10 starts at the Double-A level. For his minor-league career, the 6-foot-3, 182-pound hurler owns a lifetime 3.77 ERA over 167 Double-A innings and a lifetime 5.77 ERA across 137 1/3 Triple-A innings.

Sharp, who turns 28 in May, operates with a three-pitch mix that consists of an 88-90 mph sinker, an 80-81 mph changeup, and a 79-81 mph slider. He has been assigned to Portland. As noted by SoxProspects.com’s Chris Hatfield, though, Sharp provides the Red Sox with upper-minors rotation depth in the event that they include one of their Triple-A starters (like Chris Murphy or Brandon Walter) in trade for a major-league ready player before the season begins.

In short, Sharp could very well wind up pitching for the WooSox at some point in 2023. We will have to wait and see on that.

(Picture of Sterling Sharp: Shawn Patrick Ouellette/Portland Press Herald via Getty Images)

Former Red Sox prospect Pedro Castellanos signs minor-league deal with Padres

Former Red Sox prospect Pedro Castellanos has signed a minor-league contract with the Padres, per the MiLB.com transactions log.

Castellanos, 25, originally signed with the Red Sox as an international free agent coming out of Venezuela in July 2015. The Carora native received a modest $5,000 signing bonus and made his professional debut in the Dominican Summer League the following June.

After earning Red Sox Minor League Latin Program Player of the Year honors in 2016, Castellanos made the jump to the rookie-level Gulf Coast League (now the Florida Complex League) in 2017. From there, the first baseman/outfielder spent the entirety of the 2018 season in Greenville and the entirety of the 2019 season in Salem, where he was named a Carolina League All-Star.

With the COVID-19 pandemic forcing Minor League Baseball to cancel its 2020 campaign, Castellanos was unable to make the jump to Double-A until 2021. In 87 games with the Portland Sea Dogs that season, the right-handed hitter batted .289/.364/.471 with 13 home runs and 44 RBIs over 87 games as he made starts at all three outfield positions.

Castellanos returned to Portland for the start of the 2022 season but got off to a rough start. Coming into play on May 3, he was hitting just .116 (8-for-69) with one homer and eight RBIs through his first 18 games. From that point forward, though, Castellanos turned a corner offensively and proceeded to slash a stout .345/.360/.561 with 16 doubles, seven home runs, 34 RBIs, and 20 runs scored over his next 43 games (178 plate appearances) before earning a promotion to Triple-A Worcester in late June.

In 60 games with the WooSox, Castellanos forged a .269/.307/.397 slash line to go along with 10 doubles, two triples, five homers, 29 runs driven in, 31 runs scored, one stolen base, seven walks, and 47 strikeouts across 241 trips to the plate. The 6-foot-3, 244-pounder put up those numbers while logging 314 1/3 innings at first base, 129 innings in right field, and seven innings in left field.

While he was never truly regarded as one of the top prospects in Boston’s farm system (topped out at No. 27 on Baseball America’s rankings in 2019), Castellanos did prove to be a quality hitter — as evidenced by his career .294 batting average — during his seven years as a member of the Red Sox organization.

Castellanos, who does not turn 26 until December, will now look to break in at the big-league level with the Padres. He has technically been assigned to San Diego’s Double-A Affiliate in San Antonio, but it would not be all that surprising if he began the 2023 season at Triple-A El Paso.

In the meantime, Castellanos has been playing winter ball for the Cardenales de Lara of the Venezuelan Professional Baseball League. He slashed .289/.344/.436 with five home runs and 26 RBI in 46 regular season games for the Cardenales, who are currently in that league’s playoffs.

(Picture of Pedro Castellanos: Kelly O’Connor/sittingstill.smugmug.com)

How did Red Sox outfield prospect Phillip Sikes fare in first full pro season?

Red Sox outfield prospect Phillip Sikes enjoyed a productive first full season of pro ball in 2022.

Selected by Boston in the 18th round of the 2021 amateur draft out of Texas Christian University, Sikes played strictly in the Florida Complex League last summer after signing for just $97,500 as a college senior. He broke minor-league camp this spring with Low-A Salem.

In 50 games with the Carolina League affiliate, the right-handed hitting Sikes batted .258/.390/.516 (148 wRC+) with 18 doubles, four triples, five home runs, 28 RBIs, 36 runs scored, 12 stolen bases, 28 walks, and 55 strikeouts over 195 plate appearances before earning a promotion to High-A Greenville in early July.

With the Drive, Sikes’ production took a dip but he still managed a .248/.351/.446 slash line (118 wRC+) to go along with 11 doubles, one triple, six homers, 20 runs driven in, 21 runs scored, eight stolen bases, 25 walks, and 44 strikeouts across 44 games spanning 95 trips to the plate.

When taking these numbers from the second half of the season into consideration, it is worth mentioning that Sikes posted a .931 OPS in his first 17 games in Greenville before struggling to the tune of a .181/.302/.347 clip in the month of August. The 23-year-old did end his year on a solid note, though, as he went 8-for-23 (.348) in September with a pair of doubles, five walks, and five swiped bags.

All told, Sikes was one of 26 Red Sox minor-leaguers who accrued at least 350 total plate appearances this year. Among that group, he ranked sixth in walk rate (13.9 percent), fifth in on-base percentage (.371), seventh in slugging percentage (.481), fourth in OPS (.852), fifth in isolated power (.228), third in speed score (8.3), second in line-drive rate (29.5 percent), and fourth in wRC+ (132), per FanGraphs.

Defensively, saw playing time at all three outfield positions in his stints with Salem and Greenville. Between the two affiliates, the 6-foot-2, 190-pound speedster logged 136 2/3 innings in left, 315 innings in center, and 324 innings in right. He registered a total of 10 outfield assists and also displayed his arm strength on the mound by making two relief appearances in mop-up duty for the Salem Sox.

Sikes, who turns 24 in April, is not currently regarded by any major publication as one of the top prospects in Boston’s farm system. The native Texan is projected by SoxProspects.com to return to Greenville for the start of the 2023 campaign. That being said, one would have to imagine an early-season promotion to Double-A Portland could be in play for Sikes next spring if he picks up where he left off for the Drive.

(Picture of Phillip Sikes: Gwinn Davis/Greenville Drive)

Former Red Sox prospect Hudson Potts signs minor-league deal with Braves

Former Red Sox prospect Hudson Potts has signed a minor-league contract with the Braves for the 2023 season, per his Instagram page.

Potts, 24, was originally acquired from the Padres with outfielder Jeisson Rosario in the August 2020 trade that sent Mitch Moreland to San Diego. The former first-round draft selection was added to Boston’s 40-man roster that November and spent the entirety of his first full season in the organization at Double-A Portland.

Baseball America ranked Potts as the No. 27 prospect in the Red Sox’ farm system heading into the 2021 campaign. The right-handed hitting infielder was limited to just 78 games with the Sea Dogs and batted .217/.264/.399 (76 wRC+) with 18 doubles, 11 home runs, 47 RBIs, 33 runs scored, 16 walks, and 100 strikeouts over 307 plate appearances.

On the heels of such an underwhelming season, Potts found himself on Boston’s 40-man roster bubble coming into 2022. On March 22, the Red Sox needed to create an opening on their 40-man roster after claiming reliever Kyle Tyler off waivers from the Angels. They did so by designating Potts for assignment.

Potts cleared waivers three days after being designated and was outrighted to the minor-leagues. Remaining in the Red Sox organization as a non-40-man roster player, Potts proceeded to put up improved numbers in his return to Portland this season. He slashed .234/.297/.454 (101 wRC+) with 17 doubles, 14 homers, 44 runs driven in, 36 runs scored, one stolen base, 24 walks, and 100 strikeouts across 75 games (296 plate appearances) before being promoted to Triple-A Worcester in late September.

In two games with the WooSox, Potts went 1-for-5 (.200) with a double, run, walk, and strikeout. Since 2022 marked his seventh year in pro ball, Potts became a minor-league free agent for the first time in his career last month. As it now turns out, it took the Texas native less than a full month to find a new opportunity elsewhere.

Considering that he does not turn 25 until next October, Potts still has a relatively high ceiling. His raw power has always been his standout tool. On the other side of the ball, the 6-foot-3, 205-pounder initially came up as a shortstop but has since made the transition to the infield corners. This season, for instance, Potts started 52 games at first base compared to 20 at third.

All that being said, Potts should at the very least provide the Braves with some corner infield depth at either Double-A Mississippi or Triple-A Gwinnett next season. It will be interesting to see how he responds to a new change of scenery in 2023.

(Picture of Hudson Potts: Kelly O’Connor/sittingstill.smugmug.com)

Will Red Sox protect Christian Koss from Rule 5 Draft by adding him to 40-man roster?

By this time next Tuesday, the Red Sox will have added a number of minor-leaguers to their 40-man roster in order to protect them from December’s Rule 5 Draft.

Ceddanne Rafaela will almost certainly be protected. Wilyer Abreu, David Hamilton, Chris Murphy, Brandon Walter, and Thad Ward are also eligible and have interesting cases to be made. The same can be said for Christian Koss, who MLB Pipeline recently identified as Boston’s toughest Rule 5 decision.

Koss, 24, spent the entirety of the 2022 season with Double-A Portland. The versatile right-handed hitter batted .260/.309/.430 with 22 doubles, five triples, 17 home runs, 84 RBIs, 69 runs scored, 16 stolen bases, 25 walks, and 137 strikeouts over 125 games (532 plate appearances) en route to being named the Sea Dogs’ Most Valuable Player.

Among qualified Eastern League hitters, Koss ranked fourth in hits (125), third in RBIs, 11th in runs scored, 19th in stolen bases, 18th in batting average, 16th in speed score (6.5). He also ranked 35th in strikeout rate (25.8 percent), 57th in walk rate (4.7 percent), 43rd in on-base percentage, 35th in wRC+ (99), 60th in line-drive rate (14.4 percent), 57th in groundball rate (48.9 percent), and 48th in swinging-strike rate (14.7 percent), per FanGraphs.

Defensively, Koss saw playing time at five different positions in 2022. The 6-foot-1, 182-pounder logged 214 1/3 innings at second base, 185 innings at third base, 601 2/3 innings at shortstop, nine innings in left field, and 37 innings in right field. This year marked the first time he had ever played the outfield in his professional career.

Koss’ pro career dates back to June 2019, when he was selected by the Rockies in the 12th round of the amateur draft out of the University of California, Irvine. The Red Sox acquired the Riverside native from Colorado in exchange for left-hander Yoan Aybar the following December.

The Red Sox made that trade in order to clear a spot on their 40-man roster. Koss now finds himself in a similar position. As noted by MLB Pipeline, what makes Koss appealing is the fact that he “has solid raw power and speed, not to mention a high baseball IQ.” At the same time, however, Koss’ high strikeout rate and low walk rate indicate that “his lack of plate discipline could be a problem at higher levels” of the minor-leagues.

Koss, who turns 25 in January, is currently regarded by MLB Pipeline as the No. 20 prospect in Boston’s farm system. The former Anteater has spent his offseason playing for the Criollos de Caguas of the Puerto Rican Winter League. There, he has been under the watchful eyes of Red Sox first base coach Ramon Vazquez (Caguas’ manager), WooSox bench coach Jose Flores (Caguas’ infield coach), and Red Sox manager Alex Cora, who hails from Caguas.

If the Red Sox were to add Koss to their 40-man roster by next Tuesday’s deadline, they would retain his rights moving forward. In that scenario, Koss would be in line to make the jump to Triple-A Worcester while providing Boston with infield and outfield depth in 2023.

If the Red Sox do not add Koss to their 40-man roster by November 15, another club could acquire him for $100,000 during next month’s Rule 5 Draft. That team would then be responsible for carrying Koss on their major-league roster for the entirety of the 2023 season. If they were unable to do so, Koss would have to be offered back to the Red Sox for $50,000.

(Picture of Christian Koss: Kelly O’Connor/sittingstill.smugmug.com)