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Tyron Guerrero
P
BOS
2026 season
- GP
- 40
- W-L
- 1-2
- ERA
- 3.10
- WHIP
- 1.11
- K
- 41
- IP
- 40.2
Game log
| Date | Opp | Result | Dec | IP | H | ER | BB | K |
|---|---|---|---|---|---|---|---|---|
| Sep 23 | vs CLE | W 1-0 | - | 1.0 | 0 | 0 | 1 | 3 |
| Sep 20 | @TB | L 1-5 | - | 1.0 | 0 | 0 | 0 | 2 |
| Aug 31 | vs SEA | W 9-8 | - | 0.1 | 3 | 3 | 1 | 0 |
| Aug 29 | @NYY | W 6-0 | - | 1.0 | 1 | 0 | 0 | 0 |
| Aug 28 | @NYY | L 0-1 | - | 1.0 | 0 | 0 | 0 | 1 |
| Aug 25 | @MIA | W 7-3 | - | 1.2 | 2 | 0 | 1 | 0 |
| Aug 23 | vs SF | W 5-4 | - | 1.0 | 1 | 0 | 0 | 0 |
| Aug 19 | vs AZ | L 6-7 | - | 1.0 | 0 | 0 | 0 | 0 |
| Aug 18 | vs AZ | W 9-4 | - | 1.2 | 2 | 0 | 0 | 1 |
| Aug 12 | @TOR | L 4-6 | L | 0.0 | 3 | 4 | 2 | 0 |
| Aug 11 | @TOR | L 3-5 | - | 1.0 | 0 | 0 | 0 | 1 |
| Aug 9 | vs ATH | L 3-4 | - | 1.0 | 0 | 0 | 0 | 1 |
| Aug 6 | vs CWS | W 12-11 | - | 1.0 | 0 | 0 | 0 | 1 |
| Aug 5 | vs CWS | W 4-0 | - | 1.0 | 0 | 0 | 0 | 1 |
| Aug 2 | @LAD | W 8-4 | - | 1.0 | 2 | 1 | 0 | 1 |
| Aug 1 | @LAD | W 3-2 | - | 1.0 | 1 | 0 | 0 | 0 |
| Jul 29 | @ATH | W 4-2 | - | 1.0 | 0 | 0 | 0 | 1 |
| Jul 26 | vs TOR | W 6-1 | - | 1.0 | 1 | 0 | 1 | 0 |
| Jul 24 | vs TOR | W 6-4 | - | 1.1 | 0 | 0 | 0 | 1 |
| Jul 20 | vs BAL | W 6-5 | - | 1.1 | 2 | 1 | 0 | 3 |
| Jul 17 | vs TB | W 5-3 | - | 1.0 | 1 | 0 | 0 | 1 |
| Jul 10 | @NYM | W 6-2 | - | 1.0 | 2 | 0 | 0 | 0 |
| Jul 9 | @CWS | W 2-1 | W | 1.2 | 2 | 0 | 0 | 1 |
| Jul 5 | @LAA | W 7-5 | - | 2.0 | 0 | 0 | 1 | 1 |
| Jun 29 | vs WSH | W 6-3 | - | 1.0 | 1 | 0 | 0 | 2 |
| Jun 28 | vs NYY | W 5-4 | - | 0.2 | 0 | 0 | 0 | 0 |
| Jun 24 | @COL | L 6-8 | - | 0.2 | 2 | 0 | 0 | 1 |
| Jun 22 | @COL | L 2-3 | - | 1.0 | 0 | 0 | 0 | 0 |
| Jun 20 | @SEA | W 5-1 | - | 1.0 | 0 | 0 | 0 | 2 |
| Jun 17 | vs TOR | L 0-3 | - | 1.2 | 1 | 0 | 0 | 3 |
| Jun 13 | vs TEX | W 6-3 | - | 0.1 | 2 | 1 | 0 | 1 |
| Jun 12 | vs TEX | W 10-1 | - | 1.0 | 0 | 0 | 0 | 0 |
| Jun 8 | @TB | L 1-3 | - | 1.1 | 1 | 0 | 0 | 2 |
| Jun 7 | @NYY | L 1-6 | - | 0.2 | 0 | 0 | 0 | 1 |
| May 31 | @CLE | W 9-4 | - | 0.2 | 1 | 0 | 0 | 1 |
| May 30 | @CLE | W 9-1 | - | 0.2 | 1 | 0 | 0 | 1 |
| May 28 | vs ATL | L 2-10 | - | 0.1 | 1 | 0 | 0 | 0 |
| May 26 | vs ATL | L 6-7 | - | 2.0 | 2 | 2 | 0 | 4 |
| May 24 | vs MIN | L 5-6 | L | 0.2 | 2 | 2 | 0 | 2 |
| May 22 | vs MIN | L 6-8 | - | 1.0 | 0 | 0 | 1 | 1 |
Latest news
The Red Sox placed Guerrero on the 15-day injured list Sunday, retroactive to Sept. 24, with a right shoulder strain.
Guerrero missed most of September with right shoulder inflammation before returning to the active roster Sept. 20. He's now dealing with more shoulder trouble, and it's uncertain if he might be able to return in October should the Red Sox advance deep enough in the playoffs. Guerrero has been a reliable arm for Boston this season, posting a 3.10 ERA and 1.11 WHIP with 18 holds across 40.2 innings (40 appearances).
RotoWire via ESPN · Sep 27
The Red Sox activated Guerrero (shoulder) from the 15-day injured list Sunday, per Ian Browne of MLB.com.
Guerrero will return to the big-league club after being sidelined since Sept. 1. Through 38 games this season, the 35-year-old owns a 3.26 ERA, 1.14 WHIP and 36:7 K:BB over 38.2 innings. Boston optioned Wyatt Olds to Triple-A Worcester to make room for Guerrero on the active roster.
RotoWire via ESPN · Sep 20
Guerrero's (shoulder) stay on the injured list has been extended due to lower-back soreness, Chris Cotillo of MassLive.com reports.
Guerrero was trending toward a minimum-length absence after landing on the injured list Sept. 1 with shoulder inflammation, but a back injury will delay his return. The team doesn't seem to be very concerned about the 35-year-old's new injury, however, so he'll likely still be able to rejoin Boston's bullpen before the end of the season.
RotoWire via ESPN · Sep 16
The Red Sox placed Guerrero on the 15-day injured list Tuesday with right shoulder inflammation.
Guerrero was charged with three runs while recording only one out in Monday's win over the Mariners, and a day later he's now on the IL. Interim manager Chad Tracy said he's "very hopeful" Guerrero will be back when his 15 days are up, per Tim Healey of The Boston Globe. The 35-year-old has been a pleasant surprise in the Boston bullpen this season, collecting a 3.26 ERA and 36:7 K:BB over 38.2 frames.
RotoWire via ESPN · Sep 1
The Red Sox selected Guerrero's contract from Triple-A Worcester on Friday.
Guerrero earned the promotion by collecting a 0.92 ERA and 22:6 K:BB over 19.2 innings while notching three saves with Worcester. If the hard-throwing righty makes an appearance out of the Boston bullpen, it will be his first at the major-league level since 2019.
RotoWire via ESPN · May 22
The Red Sox will call up Guerrero from Triple-A Worcester prior to Friday's contest versus the Twins, Francys Romero of BeisbolFR.com reports.
It's a story of perseverance for the 35-year-old Guerrero, who has not pitched in the big leagues since 2019. He's earned the promotion by collecting a 0.92 ERA and 22:6 K:BB over 19.2 innings while notching three saves with Worcester. It's unclear what the corresponding move will be in order to free up a roster spot for Guerrero.
RotoWire via ESPN · May 21