← BOS team pageMLB injury reportMLB news

Zack Kelly

Zack Kelly

PBOS logoBOS

OUT

Out · expected back around Feb 1

Kelly has the ability to elect free agency, and he's expected to do so in the coming days, per Cotillo. The right-handed reliever has spent parts of the last five seasons with the Red Sox, authoring a 4.04 ERA and 127:58 K:BB across 131.1 frames.

2026 season

GP
17
W-L
0-2
ERA
3.30
WHIP
1.29
K
14
IP
16.1

Game log

DateOppResultDecIPHERBBK
May 19@KCW 7-1-0.21000
May 14vs PHIL 1-3-0.22001
May 12vs PHIL 1-2-1.00001
May 10vs TBL 1-4-0.11110
May 6@DETW 4-0-1.00022
May 3vs HOUL 1-3L1.01120
May 1vs HOUW 3-1-1.12002
Apr 28@TORL 0-3-1.01012
Apr 26@BALW 5-3-0.10000
Apr 22vs NYYL 1-4-1.00002
Apr 20vs DETW 8-6-1.21001
Apr 18vs DETL 1-4-1.01000
Apr 12@STLW 9-3-2.01102
Apr 10@STLL 2-3L0.22210
Apr 7vs MILW 3-2-0.20000
Apr 5vs SDL 6-8-1.01100
Apr 4vs SDL 2-3-1.00001
2025 season
Sep 28vs DETW 4-3-1.00000
Sep 26vs DETW 4-3-1.01000
Sep 25@TORL 1-6-0.21100
Sep 21@TBL 3-7-1.02201
Sep 19@TBW 11-7-1.00000
Sep 17vs ATHW 5-4-0.21001
Sep 16vs ATHL 1-2-1.01003
Sep 12vs NYYL 1-4-1.01020
Sep 8@ATHW 7-0-1.00000
Sep 7@AZW 7-4-0.12111
Sep 3vs CLEL 1-8-4.02004
Jun 29vs TORL 3-5-1.02111
Jun 25@LAAL 2-5-1.22004
Jun 22@SFL 5-9-1.13100
Jun 20@SFW 7-5-0.20012
Jun 17@SEAL 0-8-1.20002
Jun 9vs TBL 8-10L1.01131
Jun 8@NYYW 11-7-0.12000
Jun 6@NYYL 6-9-2.01004
Jun 3vs LAAL 3-4L1.00010
May 25vs BALL 1-5-2.01110
Apr 20vs CWSL 4-8L0.01300
Apr 15@TBW 7-4-2.23204
Apr 12@CWSL 2-3-1.21213
Apr 8vs TORL 1-6-1.24212
Apr 4vs STLW 13-9-1.02101
Apr 3@BALW 8-4W1.00000
Mar 29@TEXL 3-4-2.01001
2024 season
Sep 13@NYYL 4-5-0.01320
Sep 12@NYYL 1-2-0.10000
Sep 10vs BALL 3-5-1.00022
Sep 8vs CWSL 2-7L0.15511
Sep 6vs CWSW 3-1W1.01000
Sep 4@NYML 3-8-1.00001
Sep 1@DETL 1-4-0.22201
Aug 26vs TORL 3-7-3.00024
Aug 24vs AZL 1-4-1.00001
Aug 21@HOUW 4-1-0.10000
Aug 20@HOUW 6-5W1.00000
Aug 16@BALW 12-10-0.11000
Aug 14vs TEXL 7-9L1.03101
Aug 12vs TEXW 5-4-0.20111
Aug 10vs HOUL 4-5-1.01101
Aug 9vs HOUL 4-8-0.23000
Aug 6@KCW 6-5-1.00002
Aug 4@TEXW 7-2-1.01001
Jul 31vs SEAW 3-2W1.00011
Jul 30vs SEAL 6-10-0.11120
Jul 27vs NYYL 8-11-0.21000
Jul 26vs NYYW 9-7-0.23200
Jul 22@COLL 8-9-2.01103
Jul 19@LADL 1-4-1.10122
Jul 13vs KCW 5-0-2.02002
Jul 9vs ATHW 12-9-1.00001
Jul 4@MIAW 6-5W2.01113
Jul 2@MIAW 8-3-1.03101
Jun 29vs SDL 1-11-1.02002
Jun 23@CINW 7-4-2.21003
Jun 22@CINW 4-3W0.10000
Jun 18@TORW 4-3W1.10001
Jun 16vs NYYW 9-3-1.00002
Jun 14vs NYYL 1-8-2.00003
Jun 12vs PHIW 8-6-1.00112
Jun 9@CWSW 6-4-2.00023
Jun 8@CWSL 1-6-0.10000
Jun 5vs ATLW 9-0-1.00002
May 25vs MILL 3-6-3.02102
May 22@TBW 8-5-2.02111
May 18@STLL 2-7-0.11000
May 16vs TBL 5-7-1.00041
May 14vs TBW 5-4-2.00012
May 12vs WSHW 3-2-1.00020
May 5@MINW 9-2-1.21022
May 2vs SFL 1-3L0.24200
Apr 30vs SFW 4-0-1.00002
Apr 26vs CHCL 1-7-2.01001
Apr 24@CLEW 8-0-2.00003
2023 season
Sep 28@BALL 0-2-1.01120
Sep 26vs TBL 7-9-1.00000
Apr 12@TBL 7-9-0.22211
Apr 8@DETW 14-5-2.00011
Apr 5vs PITL 1-4-1.00010
Apr 3vs PITL 6-7-2.01012

Latest news

  • The Red Sox outrighted Kelly (elbow) to Triple-A Worcester on Friday, Chris Cotillo of MassLive.com reports.

    Kelly has the ability to elect free agency, and he's expected to do so in the coming days, per Cotillo. The right-handed reliever has spent parts of the last five seasons with the Red Sox, authoring a 4.04 ERA and 127:58 K:BB across 131.1 frames. Kelly ended the 2026 season on the 60-day injured list with right elbow inflammation.

    RotoWire via ESPN · 7h ago

  • The Red Sox designated Kelly (elbow) for assignment on Monday, Chris Cotillo of MassLive.com reports.

    Kelly spent most of the second half of the regular season on the 60-day injured list for the Red Sox. He appeared in 17 games out of Boston's bullpen prior to the injury, recording a 3.31 ERA, 1.29 WHIP and 14:7 K:BB across 16.1 innings.

    RotoWire via ESPN · 4d ago

  • The Red Sox recalled Kelly (elbow) from Triple-A Worcester and placed him on the 60-day injured list Tuesday, Tim Healey of The Boston Globe reports.

    The right-hander landed on the 7-day IL at Worcester in early July due to elbow inflammation, and he'll now be sidelined until at least early September. The severity of the injury isn't clear, but it's possible that Kelly has already thrown his last competitive pitch of the season.

    RotoWire via ESPN · Jul 21

  • Kelly was placed on the 7-day injured list at Triple-A Worcester with a right elbow injury, Chris Cotillo of MassLive.com reports.

    Kelly has made 17 appearances out of the Red Sox's bullpen this season, holding a 3.31 ERA and 14:7 K:BB over 16.1 innings. It's unclear how long he might be out, but Kelly won't be an option for the Red Sox in the immediate future.

    RotoWire via ESPN · Jul 8

  • The Red Sox optioned Zack Kelly to Triple-A Worcester on Thursday, Chris Cotillo of MassLive.com reports.

    Kelly had been solid out of the bullpen for Boston with a 3.31 ERA, 1.29 WHIP and a 14:7 K:BB through 17 appearances. The demotion is a mild surprise given that the right-hander had been great in his last 12 games with a 1.64 ERA and 11 strikeouts. He seems likely to get another look in the majors later this season.

    RotoWire via ESPN · May 21

  • Kelly retired both batters he faced in the seventh inning to earn a hold in Tuesday's 3-2 win over Milwaukee.

    Kelly entered a high-leverage situation that might normally be entrusted to Justin Slaten, but Slaten was unavailable due to an oblique injury. With Boston leading, 3-1, the bases loaded and one out, Kelly limited the damage to one run on a pair of groundouts and recorded his first hold. In three appearances since being called up from Triple-A Worcester last week, the right-handed reliever has allowed one run and one hit while striking out one over 2.2 innings. The 31-year-old Kelly is a well-known commodity in the bullpen, having made 98 appearances for the Red Sox over the previous four seasons.

    RotoWire via ESPN · Apr 8

Zack Kelly Stats, Game Log & News 2026 | Verdexed