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BOS Zack Kelly
Boston Red Sox
Pitcher
2026 Projected Value: $0
2026 Actual Value: $0 Difference: $0
Based on 10-team AL-only league

Player Stats      Daily Log
Year W L Sv Hold IP H BB SO ER ERA WHIP Rate
2026 proj 3 3 0 8 57.0 53 26 55 27 4.26 1.386 8.0
2025 1 3 0 3 35.3 35 12 35 18 4.58 1.330 3.1
2024 6 3 0 8 53.7 44 25 57 25 4.19 1.286 16.0
2023 0 0 0 0 9.3 7 8 6 4 3.86 1.607 0.8
2022 1 0 0 1 13.7 14 4 11 6 3.95 1.317 3.1

Player News XML
Date News
9/17/25 [ClutchPoints] - Red Sox’s Zack Kelly drops fiery NSFW take on bullpen. The Boston Red Sox entered Wednesday’s matchup against the Athletics having lost four of their last five games. With the Wild Card race tightening, Boston badly needed a win. And the resilient Red Sox battled back after trailing by two runs in the fifth inning. Boston forced the game into extra innings and delivered its […] The post appeared first on .
Source: https://sportspyder.com/mlb/oakland-athletics/arti...
9/09/25 Alex Cora Identifies Weakness Red Sox Need To Address. The Boston Red Sox beat the Athletics on Monday, 7-0. Zack Kelly and Chris Murphy pitched the final two innings of the game, retiring the final six A's hitters in order to secure the series opener. According to Matthew Gross, it was just the third Red Sox victory since August 12 in which Garrett Crochet or Aroldis Chapman did not appear.
Source: https://nesn.com/2025/09/alex-cora-identifies-weak...
9/03/25 Strong relief outing from Zack Kelly lone highlight in blowout Red Sox’ loss. It was a long night for the Red Sox as their homestand ended on a sour note, but Zack Kelly's outing was a positive.
Source: https://sports.yahoo.com/article/strong-relief-out...
9/02/25 Reviewing Red Sox Depth Options for September Stretch Run . Rosters expanded to 28 players on Tuesday as teams look to make a final push towards a division title or squeeze into a wild card spot. Such is the case with the Boston Red Sox, who called up pitcher Zack Kelly and reacquired catcher Ali Sanchez from the Mets. Despite the call ups, there are players left in Boston's minor league system who are able if not likely to help them on their run to October baseball. A substantial piece of Boston's return in the controversial Rafael Devers trade in June, Harrison was immediately optioned to Triple-A Worcester upon his arrival.
Source: https://dailycampus.com/2025/09/03/reviewing-red-s...
9/01/25 Rumor: Red Sox Make September Roster Call-Ups. Major league rosters expanded from 26 to 28 on Monday, giving the Boston Red Sox two additional roster spots, one for a pitcher and one for a position player. The Red Sox are calling up reliever Zack Kelly and catcher Ali Sanchez to fill those two spots. Kelly has appeared in 17 games this season and pitched his way to a 5.56 ERA over 22 2/3 innings. His last appearance came on June 29 in a loss to the Toronto Blue Jays. The righty has shown strikeout stuff in the past, but hasn't been able to consistently string together scoreless outings in the big leagues. He'll slot into a low-leverage role. The Red Sox have an opening in their rotation on Wednesday that could be filled by Kyle Harrison.
Source: https://nesn.com/2025/09/rumor-red-sox-make-septem...
8/02/25 Red Sox make 3 roster moves with bullpen as Justin Slaten takes big step toward returning. The Red Sox completed some housekeeping with their roster before Saturday's game, updating the status of three relievers. Boston activated righties Zack Kelly and Nick Burdi from the injured list and optioned them both to Triple-A Worcester, where they were both already rehabbing. Because Burdi was on the 60-day IL, the Sox needed a 40-man spot for him and cleared that by moving fellow righty Luis Guerrero to the 60-day IL. Kelly had been out since June 30 with a right oblique strain and originally had his option voided in favor of an injured list stint once further tests revealed the injury.
Source: https://www.masslive.com/redsox/2025/08/red-sox-ma...
7/04/25 Red Sox make uncommon roster move, void reliever's option to put him on IL. The Red Sox made a rather uncommon roster move after Friday's rout over the Nationals. Four days after optioning reliever Zack Kelly to Triple-A Worcester, the club voided that transaction and retroactively placed him on the 15-day injured list (retroactive to June 30) with a right oblique strain. Kelly, who owns a 5.56 ERA in 17 MLB games this season, left Sunday's loss to Toronto with oblique tightness and underwent an MRI a day later. Needing a roster spot for Jordan Hicks, who was ready to be activated from the IL after coming over in the Rafael Devers blockbuster, the Red Sox decided to send Kelly down to the minors instead of placing him on the IL.
Source: https://www.masslive.com/redsox/2025/07/red-sox-ma...
6/29/25 Red Sox reliever leaves game mid-inning with injury. Pitcher Zack Kelly left Sunday's Red Sox game in the top of the sixth inning, unable to continue with an undisclosed injury. Kelly, who had entered the game in the top of the fifth and allowed a run, opened the sixth by hitting Toronto second baseman Andres Gimenez in the foot with a pitch. As Gimenez was attended to by a member of the Toronto training staff, Kelly summoned a Red Sox trainer and manager Alex Cora to address an injury of his own. Kelly appeared to be gingerly stretching his lower back or side as he spoke with the trainer.
Source: https://www.masslive.com/redsox/2025/06/red-sox-re...
6/10/25 Rays beat Red Sox 10-8 in 11 innings, spoil top prospect Roman Anthony's MLB debut. Tampa loaded the bases off Zack Kelly in the 11th and Caminero took a 3-2 pitch for a walk. Mangum followed with a chopper to the right side that was fielded by first baseman Romy Gonzalez, but his throw to Kelly (1-3) was awkward and late.
Source: https://turnto10.com/sports/red-sox/rays-beat-red-...
5/25/25 Boston Red Sox roster: Hard-thrower returns to WooSox, Zack Kelly recalled. Manager Alex Cora hinted Saturday that a bullpen roster move might be coming Sunday morning and then more could happen in the days to follow. Boston added a fresh arm Sunday, recalling Zack Kelly from Triple-A Worcester and optioning hard-throwing righty Luis Guerrero back to Worcester. The Red Sox bullpen has been overworked recently with a starting pitcher going at least 5 innings in just three of nine games so far on the homestand. “I think where we're at we gotta keep making moves to reset the bullpen,” Cora said.
Source: https://www.masslive.com/redsox/2025/05/boston-red...
4/23/25 Zack Kelly optioned to Worcester; here’s what Red Sox want to see improve. After a rough outing Sunday and a 9.00 ERA, Zack Kelly was optioned to Triple A. The Red Sox want to see more consistency and a change in his pitch mix.
Source: https://sports.yahoo.com/article/zack-kelly-option...
4/23/25 Zack Kelly optioned to Worcester; here’s what Red Sox want to see improve. After a rough outing Sunday and a 9.00 ERA, Zack Kelly was optioned to Triple A. The Red Sox want to see more consistency and a change in his pitch mix.
Source: https://sports.yahoo.com/article/zack-kelly-option...
4/22/25 Boston Red Sox roster moves: Reliever sent down with Brayan Bello returning. The Red Sox sent reliever Zack Kelly to Triple-A Worcester on Tuesday. Brayan Bello will be activated to start Tuesday's game against Seattle.
Source: https://sports.yahoo.com/article/boston-red-sox-ro...
4/22/25 Boston Red Sox roster moves: Reliever sent down with Brayan Bello returning. The Red Sox sent reliever Zack Kelly to Triple-A Worcester on Tuesday. Brayan Bello will be activated to start Tuesday's game against Seattle.
Source: https://sports.yahoo.com/article/boston-red-sox-ro...
4/20/25 Quero Puts White Sox Ahead In 8-4 Comeback Victory Over Red Sox. The White Sox have lost six one-run games and a pair of two-run games this season, and Sunday's game was trending in the direction of yet another narrow loss. The Red Sox took a 4-2 lead into seventh when they turned to the bullpen for Zack Kelly after six innings of two-run ball from starting pitcher Tanner Houck. Kelly struggled with command right away, loading the bases with two batters hit by pitch and a single. White Sox manager Will Venable opted to play some small ball, as Brooks Baldwin pushed a bunt down the first base line to easily score a run.
Source: https://www.si.com/mlb/whitesox/news/edgar-quero-p...
3/25/25 Zack Kelly, Greg Weissert earn spots in Red Sox bullpen. “I feel really good being in the zone,” said Kelly, who had his worst outing of the spring (? of an inning, 3 hits, 2 runs) on Tuesday against the Sultanes just after learning he'd made the team. Weissert allowed six runs in 8? innings in the Grapefruit League, but his outstanding performance down the stretch in 2024 gave him an inside track to a roster spot.
Source: https://www.bostonglobe.com/2025/03/25/sports/red-...
3/01/25 Red Sox reliever returns after 'sour taste' with new pitch MLB The Show had him throwing. Red Sox right-handed reliever Zack Kelly added a two-seam fastball to his repertoire in the offseason. MLB The Show's Zack Kelly already threw one though. " It (the video game) had it like three years ago," said Kelly, who made his major league debut in 2022. It's a pitch he and the Red Sox discussed in the offseason to “mess around with” and ”just see what it turns into.”
Source: https://www.masslive.com/redsox/2025/03/red-sox-re...
9/09/24 Tom Caron: Bullpen spells doom for Red Sox's playoff chances. Reliever Zack Kelly delivers a pitch in the ninth inning of the Boston's 7-2 loss to the White Sox on Sunday in Boston. Kelly gave up five earned runs in the ninth inning. Red Sox fans got an ugly reminder Sunday that Boston didn't have enough relief pitching to get to the promised land this season.
Source: https://www.centralmaine.com/2024/09/09/tom-caron-...
9/09/24 White Sox score 5 runs in the 9th and avoid a series sweep with 7-2 comeback win over the Red Sox. Dominic Fletcher’s RBI double sparked a five-run ninth inning and the Chicago White Sox avoided a three-game sweep with a 7-2 victory over the Boston Red Sox on Sunday. Chicago starter Chris Flexen’s winless streak extended to 21 straight starts — the longest in team history — after he was pulled with the game tied in the seventh inning. The 30-year-old right-hander gave up two runs on six hits, striking out six and walking one. Chicago (33-11) had lost 14 of its last 15 games before rallying against against Boston reliever Zack Kelly (6-3). Zach DeLoach added a two-run single in the ninth inning.
Source: https://www.chron.com/sports/article/white-sox-sco...
9/08/24 White Sox score 5 runs in the 9th and avoid a series sweep with 7-2 comeback win over the Red Sox. Dominic Fletcher’s RBI double sparked a five-run ninth inning and the Chicago White Sox avoided a three-game sweep with a 7-2 victory over the Boston Red Sox on Sunday. Chicago starter Chris Flexen’s winless streak extended to 21 straight starts — the longest in team history — after he was pulled with the game tied in the seventh inning. The 30-year-old right-hander gave up two runs on six hits, striking out six and walking one. Chicago (33-11) had lost 14 of its last 15 games before rallying against against Boston reliever Zack Kelly (6-3). Zach DeLoach added a two-run single in the ninth inning.
Source: https://www.chron.com/sports/article/white-sox-sco...