Tag: pitching prospects

Red Sox promote relief prospect Matt McShane (acquired in offseason trade) to High-A Greenville

In addition to shortstop Franklin Arias and left-hander Brandon Clarke, the Red Sox promoted pitching prospect Matt McShane from Low-A Salem to High-A Greenville on Tuesday.

McShane, 22, opened his first season as a member of the Red Sox organization in Salem’s bullpen. The right-hander posted a 0.63 ERA (1.89 FIP) with 20 strikeouts to four walks over seven relief appearances (14 1/3 innings) for Boston’s Carolina League affiliate. Opposing hitters batted just .185 against him.

Among the 59 pitchers in the Carolina League who have thrown at least 14 innings to this point in the year, McShane ranks second in ERA and FIP, third in xFIP (2.24) and swinging-strike rate (19.6 percent), fifth in strikeout rate (34.5 percent), seventh in strikeouts per nine innings (12.56), 11th in WHIP (0.98), 13th in walk rate (6.9 percent), 14th in walks per nine innings (2.51), 16th in batting average against, and 22nd in groundball rate (48.4 percent), per FanGraphs.

McShane was acquired by the Red Sox from the Pirates for fellow righty Chase Shugart (who had been designated for assignment) in January. The Pennsylvania native was originally selected by Pittsburgh in the 13th round of last summer’s draft out of St. Joseph’s. He received a $150,000 signing bonus but did not make his professional debut until April 6 of this year.

Listed at 6-foot-4 and 220 pounds, McShane operates with a three-pitch mix that consists of a 92-94 mph fastball that tops out at 95 mph, an 82-86 mph slider, and a 79-81 mph changeup, per his SoxProspects.com scouting report. He is not currently ranked by the site as one of the organization’s top 60 prospects.

McShane, who does not turn 23 until November, figures to provide Greenville with additional right-handed bullpen depth behind the likes of Isaac Stebens, Cooper Adams, Adam Smith, and Darvin Garcia. He will likely make his High-A debut at some point during the Drive’s series against the Asheville Tourists at Fluor Field this week.

(Picture of Matt McShane: St. Joseph’s University Athletics)

Red Sox prospect Trennor O’Donnell named Carolina League Pitcher of the Week

Red Sox pitching prospect Trennor O’Donnell has been named the Carolina League Pitcher of the Week for the week of April 21-27, Minor League Baseball announced on Monday.

O’Donnell shined for Low-A Salem in Sunday’s series finale on the road against Hickory. The 23-year-old right-hander scattered three hits over five scoreless innings, striking out seven and walking none en route to notching his first win of the season. He retired the final eight batters he faced and finished with 56 pitches (40 strikes), generating four swings and misses on the afternoon.

The Red Sox ultimately defeated the Crawdads by a final score of 19-1 at L.P. Frans Stadium to salvage a series split and improve to 8-13 on the young season.

O’Donnell, Boston’s eighth-round selection in the 2023 draft, has appeared in four games (made two starts) for Salem so far this year. The Ball State product has posted a 4.20 ERA (3.96 FIP) with 19 strikeouts to nine walks over 15 innings in which opposing hitters have batted .271 against him.

Among the 33 pitchers in the Carolina League who have thrown at least 15 innings to this point in 2025, O’Donnell most notably ranks seventh in strikeouts per nine innings (11.40), ninth in strikeout rate (27.5 percent), and 11th in xFIP (3.83), per FanGraphs. He also ranks 25th in BABIP (.385), which suggests that he may be the victim of some poor luck.

O’Donnell, who turns 24 in June, is not currently ranked among Boston’s top 60 prospects by SoxProspects.com. The imposing 6-foot-7, 240-pound hurler throws from a three-quarters arm slot and incorporates a medium-high leg kick into his delivery. As noted in his SoxProspects.com scouting report, he features an 89-91 mph fastball, a 79-81 mph sweeper, an 85-86 mph slider, and an 86-87 mph changeup. He has also begun throwing a splinker (splitter-sinker hybrid), according to Beyond the Monster’s Andrew Parker.

Since making his professional debut last April, O’Donnell has pitched exclusively at the Low-A level, compiling a career 4.04 ERA (3.33 FIP) with 90 strikeouts to 30 walks over 78 total innings for Salem. Taking that into consideration, it would not be too surprising if the native Texan received a promotion to High-A Greenville in the not-so-distant future.

Regardless of his outlook, though, O’Donnell becomes the second member of the 2025 Salem Red Sox to earn Carolina League Pitcher of the Week honors. He joins fellow righty Blake Aita (March 31-April 6) in accomplishing that feat.

Looking outside of the organization, former Red Sox prospects Brandon Walter (signed a minor-league contract with the Astros after being released last August) and Elmer Rodriguez (traded to the Yankees for Carlos Narvaez in December) were named the Pacific Coast and South Atlantic League Pitchers of the Week for the week of April 21-27, respectively.

(Picture of Trennor O’Donnell: Kelly O’Connor/sittingstill.smugmug.com)

Red Sox to promote pitching prospect Hayden Mullins to Double-A Portland

The Red Sox are promoting pitching prospect Hayden Mullins from High-A Greenville to Double-A Portland, as was first reported by Andrew Parker of Beyond the Monster.

Mullins, 24, has certainly gotten his season off to an encouraging start. In four outings (three starts) to open the 2025 campaign for Greenville, the left-hander posted a 1.06 ERA (2.22 FIP) with 27 strikeouts to three walks over 17 innings in which opposing hitters batted just .186 against him. He fanned six across four scoreless frames in his last time out against Hub City this past Thursday.

Entering play on Sunday, Mullins was one of 31 qualified pitchers in the South Atlantic League. Among those 31, he ranked first in strikeout rate (42.9 percent) and xFIP (2.10), second in strikeouts per nine innings (14.29), third in FIP and swinging-strike rate (16.5 percent), fifth in ERA, eighth in walks per nine innings (1.59) and walk rate (4.8 percent), 10th in WHIP (0.82), 13th in batting average against and line-drive rate (20 percent), and 15th in groundball rate (44 percent), per FanGraphs.

A former 12th-round draft selection of the Red Sox coming out of Auburn in 2022, Mullins received a $97,500 signing bonus but did not make his professional debut until August 2023 due to Tommy John surgery recovery and rehab. The Tennessee native spent all of 2024 with Greenville and has since compiled a 3.48 ERA (3.81 FIP) with 145 strikeouts to 45 walks over 106 total innings at the High-A level.

Listed at 6-foot and 194 pounds, Mullins throws from a three-quarters arm slot and incorporates a high leg kick into his delivery. As noted in his SoxProspects.com scouting report, the under-the-radar lefty operates with a four-pitch mix that consists of a 92-94 mph fastball that reaches 95 mph, an 81-85 mph slider, a 78-80 mph curveball, and an 81-83 mph changeup. He has flashed bat-missing ability with most, if not all, of his offerings.

Mullins, who turns 25 in September, is currently regarded by SoxProspects.com as the No. 29 prospect in Boston’s farm system, which ranks 14th among pitchers in the organization. He is not included in Baseball America’s or MLB Pipeline’s Top 30 Red Sox prospects list at the moment, but that could soon change if he shows that he can adjust and hold his own against more advanced competition in the upper-minors.

As he prepares to make the leap from High-A to Double-A for the first time, it is worth noting that Mullins can become eligible for this winter’s Rule 5 Draft if he is not added to Boston’s 40-man roster by the November protection deadline. The Red Sox will presumably use this promotion to help determine if Mullins is worthy of such a spot, though he could emerge as a possible trade candidate well before that decision needs to be made.

Regardless, Mullins is slated to join a talented pitching staff in Portland that– as of this writing– includes the likes of David Sandlin, Yordanny Monegro, Blake Wehunt, and fellow southpaw Connelly Early, among others. He will likely make his Double-A debut at some point during the Sea Dogs’ upcoming series on the road against the New Hampshire Fisher Cats this coming week.

(Picture of Hayden Mullins: Kelly O’Connor/sittingstill.smugmug.com)

Red Sox prospect Blake Aita named Carolina League Pitcher of the Week after impressive pro debut

Red Sox pitching prospect Blake Aita has been named the Carolina League Pitcher of the Week for the week of March 31-April 6, Minor League Baseball announced on Monday.

Aita, Boston’s sixth-round selection in the 2024 draft out of Kennesaw State, made his professional debut by getting the start in Low-A Salem’s season opener against the Delmarva Shorebirds last Friday. The right-hander tossed five scoreless, no-hit innings in which he walked only one and struck out four en route to notching the first win of his young career.

After retiring the first seven batters he faced at Carilion Clinic Field, Aita issued a one-out walk to Yasmil Bucce in the top of the third. The 21-year-old then negated that free pass by getting Edrei Campos to ground into an inning-ending double play and cruised from there by sitting down the side in order in his final two frames. He finished with 58 pitches (36 strikes) and induced seven swings and misses as Salem defeated Delmarva, 12-1.

Aita was taken by the Red Sox with the 177th overall pick in last summer’s draft and received an under-slot $300,000 signing bonus. The Tennessee native did not pitch for a minor-league affiliate after putting pen to paper, likely because he had just logged 85 1/3 innings and earned 2024 All-Atlantic Sun First Team honors in his sophomore season at Kennesaw State. He, instead, had to wait until late last week to make his pro debut.

Listed at 6-foot-4 and 215 pounds, Aita throws from a three-quarters arm slot and incorporates a medium-high leg kick into his delivery. As noted in his SoxProspects.com scouting report, the sturdy righty operates with a four-pitch mix that consists of a 92-95 mph fastball (his velocity ticked up in spring training), an 80-82 mph sweeper, an 86-89 mph cutter, and an 85-89 mph changeup.

Aita, who turns 22 in June, is currently regarded by SoxProspects.com as the No. 39 prospect in Boston’s farm system, which ranks 20th among pitchers in the organization. Though it is still early into the minor-league season, it should be interesting to see if Aita can work his way up to High-A Greenville before long.

(Picture of Blake Aita: Kelly O’Connor/sittingstill.smugmug.com)

Red Sox pitching prospect Juan Valera opening 2025 season with High-A Greenville

Rising Red Sox pitching prospect Juan Valera will open the 2025 minor-league season with High-A Greenville, as was revealed when the Drive released their Opening Day roster earlier Wednesday.

It is an aggressive assignment for Valera, who turns 19 in May and is easily the youngest player on Greenville’s roster. Still, despite having limited experience above rookie ball, the Red Sox believe the right-hander is deserving of such a challenge after putting together an impressive spring in Fort Myers.

“He had a productive offseason coming into camp strong, physically and mentally,” Red Sox senior director of player development Brian Abraham said of Valera. “We saw a jump in velocity and an improvement in his secondaries with a willingness to challenge in the zone. He earned an opportunity to be challenged in Greenville.”

Valera, who originally signed with Boston for a modest $45,000 as an international free agent coming out of the Dominican Republic in April 2023, was not on many people’s radars at this time last year. The Sabana Grande de Palenque native was coming off a debut season in which he put up a 5.93 ERA (4.67 FIP) with 31 strikeouts to 20 walks over 15 appearances (27 1/3 innings) in the Dominican Summer League.

To open the 2024 campaign, though, Valera began to draw attention to himself thanks to what he was doing in the Florida Complex League. In 11 outings (nine starts) for the FCL Red Sox, the righty posted a 1.79 ERA (3.25 FIP) with 40 strikeouts to 14 walks over 40 1/3 innings in which opposing hitters batted .128 against him. He was then rewarded with a promotion to Low-A Salem on July 23 and closed out the season by pitching to a 2.35 ERA (3.54 FIP) with 28 strikeouts to 14 walks in seven starts (23 innings) for Boston’s Carolina League affiliate while holding opponents to a .120 batting average.

Altogether, Valera forged a 1.99 ERA (3.36 FIP) with 68 strikeouts to 28 walks in 18 appearances (16 starts) spanning 63 1/3 innings between the FCL and Salem. He led all Red Sox minor-leaguers who logged at least 60 innings last season in ERA, batting average against (.125), WHIP (0.85), line-drive rate (10.3 percent), and groundball rate (56.6 percent), per FanGraphs. To that end, he was recognized as a 2024 Florida Complex League All-Star and SoxProspects.com’s Pitcher of the Year.

Looking to build off the momentum he gained in his first season stateside, Valera came into camp this spring and wasted little time turning heads on the backfields. He was named to the Red Sox’ Spring Breakout roster last month and pitched against prospects from the Twins organizations in the first-ever “Futures at Fenway South” game at JetBlue Park on March 14. As part of that showcase, in which he struck out four and allowed two runs in three innings, Valera showed flashes of his potential.

Valera, as noted by SoxProspects.com’s director of scouting Ian Cundall, featured a 97-99 mph fastball that reached 100 mph “multiple times.” The 6-foot-3, 205-pound hurler also mixed in an 89-92 mph slider, an 86-88 mph sweeper, and a 91-94 mph changeup. If there were any drawbacks from the performance, it’s that Valera lost the strike zone a bit after his typical three-quarters arm slot got “out of sync.” Josh Norris echoed the same sentiment in a recent piece for Baseball America.

Lauded by club officials for his work ethic and openness to instruction, Valera is currently regarded by Baseball America as the No. 14 prospect in Boston’s farm system, which ranks sixth among pitchers in the organization. MLB Pipeline has him ranked 18th among its top 30 Red Sox prospects, while SoxProspects.com has him at No. 19 ahead of its next rankings update.

In Greenville, Valera is slated to join a talented pitching staff that includes the likes of Payton Tolle, Jedixson Paez, Hayden Mullins, and Jojo Ingrassia, among others. The 2025 season begins for the Drive on Friday night when they open a three-game weekend series against the Bowling Green Hot Rods at Fluor Field.

(Picture of Juan Valera: Kelly O’Connor/sittingstill.smugmug.com)

Red Sox release pitching prospect from Andrew Benintendi trade

The Red Sox released minor-league pitcher Grant Gambrell on Wednesday, per the club’s MiLB.com transactions log.

Gambrell, 27, was one of two players to be named later acquired from the Royals as part of the three-team, seven-player trade that sent Andrew Benintendi to Kansas City in February 2021. Along with fellow right-hander Luis De La Rosa, Gambrell did not switch organizations until four months after the original deal was made.

A former third-round draft selection of the Royals coming out of Oregon State in 2019, Gambrell missed the entirety of the 2022 season due to a benign tumor in his calcaneus (the heel bone) that required five surgeries to remove. The California native returned to the mound in 2023 and fared well across three levels, posting a 3.63 ERA (4.23 FIP) in 23 starts (126 1/3 innings) between High-A Greenville, Double-A Portland, and Triple-A Worcester.

Fresh off being recognized as SoxProspects.com’s 2023 Comeback Player of the Year, Gambrell broke camp with Worcester last spring. The 6-foot-4, 225-pound hurler forged a 4.09 ERA (4.38 FIP) with 65 strikeouts to 34 walks over 18 appearances (16 starts) spanning 83 2/3 innings before being placed on the injured list with right elbow inflammation in late July. That ultimately cost him the remainder of the 2024 campaign.

Gambrell appeared in three Grapefruit League games for the Red Sox as a minor-league call-up this spring and allowed three earned runs in 1 1/3 innings of relief. Presumably, the righty was competing for a spot in Worcester’s season-opening starting rotation in camp. He will now have to look for opportunities elsewhere if he is intent on continuing his career.

With Gambrell’s release, right-hander Josh Winckowski is now the only one of the five players the Red Sox acquired from the Royals and Mets in the Benintendi trade who is still in the organization. Before Wednesday’s move, Boston had already cut ties with De La Rosa in 2024, Freddy Valdez in 2023, and Franchy Cordero in 2022.

(Picture of Grant Gambrell: Kelly O’Connor/sittingstill.smugmug.com)

Red Sox pitching prospects Matt Duffy, Cole Tolbert slated to undergo Tommy John surgery

It appears as though the 2025 season is already over for a pair of intriguing Red Sox pitching prospects.

As was first reported by Andrew Parker of Beyond the Monster, right-handers Matt Duffy and Cole Tolbert have been diagnosed with UCL (ulnar collateral ligament) tears in their pitching elbows. While Duffy’s was described as a full tear, both hurlers are scheduled to undergo Tommy John surgery in Arlington, Texas on March 5.

Duffy, 23, was Boston’s fourth-round selection in the 2023 draft out of Canisius University in Buffalo, N.Y. The Ontario native forwent his commitment to transfer to South Carolina for his senior year by signing with the club for an under-slot $350,000 that July. He then spent the entirety of his first full professional season at Low-A Salem in 2024, compiling a 2.83 ERA (3.58 FIP) with exactly 100 strikeouts to 27 walks over 22 appearances (21 starts) and a staff-leading 98 2/3 innings in which opposing hitters batted .223 against him. That includes a sparkling 1.05 ERA (2.25 ERA) in his final nine outings (43 innings) after the calendar flipped from June to July.

Tolbert, meanwhile, was selected by the Red Sox in the 18th round of last summer’s draft out of Ole Miss. In a similar fashion to Duffy, the 22-year-old had been committed to transfer to Troy University for his senior season but instead signed with Boston for an under-slot $50,000 in July. He made his professional debut shortly thereafter and closed the 2024 campaign by posting a 5.56 ERA (3.23 FIP) with 14 strikeouts to six walks in five appearances (three starts) spanning 11 1/3 innings for Salem. Opponents batted .268 against him.

Neither Duffy (who turns 24 in October) nor Tolbert (who turns 23 in December) are currently ranked among Boston’s top 60 prospects by SoxProspects.com. The former was projected by the site to make the jump to High-A Greenville for the start of the upcoming season while the latter was slated to return to Salem. They will now miss all of 2025 and likely part of 2026 depending on the nature of their respective procedures.

(Picture of Matt Duffy: Gary Streiffer/Flickr)

Red Sox prospect Jeremy Wu-Yelland to pitch for China at WBC qualifiers

Last week, Red Sox pitching prospect Jeremy Wu-Yelland was named to China’s roster for the upcoming World Baseball Classic qualifiers that will be held in Tucson, Ariz., from March 2-6.

Wu-Yelland was one of 14 pitchers to make the cut for China. The 25-year-old left-hander is a native of Spokane, Wash. but his mother’s side of the family is Chinese, hence the connection. He even has his Chinese name — “Light Of The Sun In The Morning” — tattooed onto his right arm.

Wu-Yelland was originally selected by the Red Sox in the fourth round of the COVID-shortened 2020 draft out of Hawaii. He signed with the club for $200,000 that July and made his professional debut the following May. After forging a 3.91 ERA in 23 starts (76 innings) between Low-A Salem and High-A Greenville in 2021, he underwent Tommy John surgery in April 2022 and missed the entire season as a result.

Wu-Yelland returned to the mound in June 2023 as part of a rehab assignment in the rookie-level Florida Complex League. The lefty was, however, limited to just three short appearances for the FCL Red Sox before being shut down for the remainder of the year. He subsequently opened the 2024 campaign on Greenville’s injured list due to stiffness and was then activated for his season debut in late May.

From there, Wu-Yelland posted a 5.67 ERA (but far more encouraging 3.77 FIP) with 42 strikeouts to 23 walks over 23 relief appearances (33 1/3 innings) for the Drive in which opposing hitters batted .238 against him. That includes a 3.46 ERA and 2.63 FIP across his final nine outings (13 innings) of the season.

Among the 164 minor-leaguers who threw at least 33 innings in the South Atlantic League last year, Wu-Yelland most notably ranked 26th in swinging-strike rate (15.3 percent), 35th in strikeouts per nine innings (11.34), 43rd in groundball rate (46.4 percent), 70th in FIP, and 74th in strikeout rate (26.4 percent), per FanGraphs.

As noted in his SoxProspects.com scouting report, Wu-Yelland primarily operated with a three-pitch mix in 2024. Throwing from a three-quarters arm slot, the 6-foot-2, 210-pound southpaw flashed a 94-96 mph fastball that topped out at 97 mph, an 89-91 mph cutter, and an 80-84 mph slider. He has also featured a changeup in the past but may have scrapped that offering.

Wu-Yelland, who does not turn 26 until June, is not currently regarded by publications such as SoxProspects.com as one of Boston’s top pitching prospects. If healthy, he is projected by the site to make the jump to Double-A Portland as a member of the Sea Dogs’ bullpen to open the 2025 season. How he fares will likely depend on his command and control of the strike zone.

(Picture of Jeremy Wu-Yelland: Gwinn Davis/Greenville Drive)

Red Sox to sign former Angels two-way prospect to minor-league deal

The Red Sox have signed free agent left-hander Erik Rivera to a minor-league contract, as was first reported by Hunter Noll of Beyond the Monster. Rivera himself appears to have confirmed the signing on his Instagram account.

Rivera is a former 2019 fourth-round draft pick of the Angels out of the Puerto Rico Baseball Academy. The 23-year-old Caguas native was taken 121st overall and forewent his commitment to Florida International by signing with Los Angeles for $597,500.

A two-way player coming out of high school, Rivera signed with the Angels as an outfielder and batted .208/.313/.264 with four doubles, nine RBIs, eight runs scored, nine walks, and 31 strikeouts over 21 games (83 plate appearances) in the 2019 rookie-level Arizona League. His first full professional season was wiped out due to the COVID-19 pandemic in 2020 and he emerged as a full-time pitcher beginning in 2021.

Rivera entered the 2021 season ranked by Baseball America as the No. 14 prospect in Los Angeles’ farm system. The lefty made his professional pitching debut at Low-A Inland Empire that May but then suffered a sprained UCL in his left elbow that ultimately required surgery. As a result, he missed the remainder of the 2021 campaign and all of 2022 before making his way back to the mound in August 2023. He closed out the year by forging a 4.09 ERA (5.90 FIP) with 16 strikeouts to 15 walks in seven total outings (11 innings) between the Arizona Complex League and High-A Tri-City.

Rivera returned to Tri-City for the start of the 2024 season and posted a 3.31 ERA (4.94 FIP) with 39 strikeouts to 20 walks over 10 appearances (eight starts) spanning 35 1/3 innings in which opposing hitters batted .213 against him. The southpaw was released by the Angels in late July and spent the remainder of the year in free agency. Most recently, he enjoyed a productive offseason back on his home island by pitching to a 1.04 ERA (0.86 WHIP) with 21 strikeouts to 10 walks in 16 relief appearances (17 1/3 innings) for the Leones de Ponce of the Puerto Rican Winter League.

Listed at 6-foot-2 and 200 pounds, Rivera has been described as having a smooth and athletic delivery. In the past, he has reached 95 mph with his fastball which typically sits in the lower-90s. He has also featured an upper-70s curveball that resembled a slider and a lower-80s changeup with fade, per his July 2021 Baseball America scouting report.

Rivera, who turns 24 in April, should provide the Red Sox with additional pitching depth from the left side in the lower minors to open the 2025 season. It remains to be seen what affiliate he will break camp with later this spring, though Low-A Salem or High-A Greenville would appear to be the most likely destinations.

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

Who is Eduardo Rivera? Red Sox prospect led LBPRC in Ks, pitched in Caribbean Series this winter

As he prepares for his first spring training as a member of the Red Sox organization, it feels like an appropriate time to look back at the winter pitching prospect Eduardo Rivera had.

Rivera, a 21-year-old left-hander, spent the winter on his home island of Puerto Rico. The San Juan native opened the 2024-2025 Liga de Béisbol Profesional Roberto Clemente (LBPRC) regular season with the Cangrejeros de Santurce and was excellent.

In 11 regular-season appearances (seven starts), Rivera posted a 1.15 ERA and 0.95 WHIP with a league-leading 56 strikeouts to 12 walks over 39 innings. He made an additional start for the Cangrejeros in the playoffs — in which he struck out eight across six scoreless frames — before they were eliminated by the Senadores de San Juan on January 12.

Three days after Santurce was knocked out of the semi-finals, Rivera joined the Indios de Mayaguez for their best-of-nine LBPRC championship series matchup against San Juan. The lefty got the starting nod in Games 2 and 6 (the clincher) and picked up where he left off by tossing 10 total innings of shutout ball as Mayaguez was ultimately crowned league champion for the 20th time in franchise history.

As a result of being on the championship-clinching team in the LBPRC, Rivera made Puerto Rico’s roster for the 2025 Caribbean Series in Mexicali, Mexico. He unfortunately struggled in his lone start against the Dominican Republic in round-robin action on February 4, surrendering seven runs (three earned) on six hits, one walk, one hit batsman, and five strikeouts over 2 2/3 innings. The Dominican Republic then defeated Mexico in the final on February 7 to take home its fifth Caribbean Series title.

Regardless of how it ended, it was nonetheless a productive winter for Rivera after what must have been a turbulent 2024 season stateside. The southpaw was released by the Athletics (the organization that originally selected him in the 11th round of the 2021 draft out of high school) last May. He then signed a minor-league contract with the Red Sox in June and made four appearances (one start) in the rookie-level Florida Complex League before joining Low-A Salem in late July.

In six outings (four starts) for Salem, Rivera forged a 1.99 ERA (2.56 FIP) with 30 strikeouts to seven walks over 22 2/3 innings in which opposing hitters batted just .175 against him. Among the 21 Red Sox minor-leaguers who threw at least 20 innings in the Carolina League last year, Rivera ranked first in WHIP (0.93), second in ERA and line-drive rate (16 percent), third in strikeout rate (33.3 percent) and xFIP (2.59), fourth in strikeouts per nine innings (11.91), batting average against, FIP, and groundball rate (54 percent), fifth in walks per nine innings (2.78), sixth in swinging-strike rate (14.7 percent), and seventh in walk rate (7.8 percent), per FanGraphs.

Rivera, who does not turn 22 until June, is currently regarded by SoxProspects.com as the No. 58 prospect in Boston’s farm system after previously being unranked. The imposing 6-foot-7, 237-pound hurler throws from a three-quarters arm slot and incorporates a high leg kick into his delivery. He primarily operates with a 92-95 mph fastball that has reached 97 mph and also mixes in a changeup and slider.

Barring a trade or other surprise move, Rivera is projected by SoxProspects.com to make the jump to High-A Greenville for the start of the 2025 season. Whether he does so as a member of the Drive’s starting rotation or bullpen remains to be seen.

(Picture of Eduardo Rivera: Miguel Rodriguez/Getty Images)