SF @ STLFinal 6-5, Sep 16, 2026
IP 0.1, H 0, R 0, ER 0, BB 0, K 0, HR 0, PC-ST 1-1, ERA 4.22, PC 1
Betting: SF moneyline won, run line +1.5 covered
BaseballMLBWashington NationalsRelief pitcher
Reiver Sanmartin
Stats, career and game logReiver Sanmartin is a left-handed relief pitcher for the Washington Nationals whose MLB debut came on Sep 27, 2021, with the Cincinnati Reds.
86 MLB games89 strikeouts
Updated
About Reiver Sanmartin
Born on April 15, 1996, in Cartagena, Colombia, Reiver Sanmartin bats left-handed and throws left-handed. The relief pitcher made his MLB debut on Sep 27, 2021, with the Cincinnati Reds, and he pitches for the Washington Nationals.
With Cincinnati, Sanmartin made 4 starts in the 2022 regular season and posted a 6.32 ERA with 47 strikeouts in 57.0 innings. Through the 2025 season, he had a 5.66 ERA and 73 strikeouts in 84.1 innings over 62 games.
Agatha Research DeskUpdated Nov 11, 2026Season by season86
Every season, every MLB appearance of his career, newest season first.
| Season | Team | Games | Starts | IP | K | BB | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|
| 2026 |  SF | 24 | 0 | 21.1 | 16 | 6 | 4.22 | 1.22 |
| 2025 |  CIN | 1 | 0 | 1.2 | 2 | 1 | 0.00 | 1.80 |
| 2023 | CIN | 14 | 0 | 14.0 | 13 | 10 | 7.07 | 1.93 |
| 2022 | CIN | 45 | 4 | 57.0 | 47 | 29 | 6.32 | 1.67 |
| 2021 | CIN | 2 | 2 | 11.2 | 11 | 2 | 1.54 | 1.20 |
| Career | 86 | 6 | 105.2 | 89 | 48 | 5.37 | 1.56 |
How he is doing now
2026 pitching4.22 ERA21.1 innings, 16 strikeouts, 1.22 WHIP
Nationals77-852026 regular season
Last game0.1 IP, 0 K, 0 ERSep 16 at Cardinals
Injury status
No active flag. Latest report 15-Day-IL (53d ago), no longer on the injury report.
Game log, 2026
SF @ STLFinal 1-2, Sep 14, 2026
IP 0.0, H 2, R 0, ER 0, BB 1, K 0, HR 0, PC-ST 11-6, ERA 4.29, PC 11
Betting: SF moneyline lost, run line +1.5 covered
SD @ SFFinal 7-6, Sep 12, 2026
IP 0.1, H 0, R 0, ER 0, BB 0, K 0, HR 0, PC-ST 1-1, ERA 4.29, PC 1
Betting: SF moneyline lost, run line +1.5 covered
STL @ SFFinal 1-2, Sep 8, 2026
IP 1.0, H 1, R 0, ER 0, BB 0, K 0, HR 0, PC-ST 16-10, ERA 4.35, PC 16
Betting: SF moneyline won, run line +1.5 covered
Show all 10 games
STL @ SFFinal 4-5, Sep 7, 2026
IP 0.1, H 0, R 0, ER 0, BB 0, K 1, HR 0, PC-ST 5-4, ERA 4.58, PC 5
Betting: SF moneyline won, run line -1.5 did not cover
SF @ NYMFinal 9-5, Sep 5, 2026
IP 1.1, H 1, R 1, ER 1, BB 0, K 1, HR 0, PC-ST 23-16, ERA 4.66, PC 23
Betting: SF moneyline won, run line +1.5 covered
SF @ PITFinal 2-5, Sep 3, 2026
IP 1.0, H 1, R 2, ER 1, BB 1, K 0, HR 0, PC-ST 20-13, ERA 4.50, PC 20
Betting: SF moneyline lost, run line +1.5 did not cover
SF @ PITFinal 5-4, Sep 2, 2026
IP 0.2, H 1, R 0, ER 0, BB 1, K 0, HR 0, PC-ST 20-8, ERA 4.24, PC 20
Betting: SF moneyline won, run line +1.5 covered
SF @ ATLFinal 7-3, Aug 31, 2026
IP 1.2, H 0, R 0, ER 0, BB 0, K 2, HR 0, PC-ST 16-13, ERA 4.41, PC 16
Betting: SF moneyline won, run line +1.5 covered
ARI @ SFFinal 2-7, Aug 29, 2026
IP 0.1, H 0, R 0, ER 0, BB 0, K 1, HR 0, PC-ST 5-3, ERA 4.91, PC 5
Betting: SF moneyline won, run line +1.5 covered
Box score lines from ESPN.
Betting: his team's result at the closing moneyline and run line most of our sportsbooks closed at (3 books or more).
Career
5years2021 to 2026
- 2021MLB debutCincinnati Reds
- 2022Best season57.0 IP, 47 K, 6.32 ERA in 45 games
- Sep 16, 2026Latest game0.1 IP, 0 K, 0 ER at Cardinals
Regular season
85 games
105.2 IP, 89 K, 5.37 ERA
MLB debut
2021 seasonCincinnati Reds
Latest game
Sep 16, 2026: 0.1 IP, 0 K, 0 ERSF 6, Cardinals 5
Most often against
The teams he has faced most, with his teams' record and his line against each.
St. Louis Cardinals4 games
3-1his teams
His line: 1.2 IP, 1 K, 0.00 ERA
Last met Sep 16, 2026
San Diego Padres3 games
0-3his teams
His line: 1.2 IP, 2 K, 21.60 ERA
Last met Sep 12, 2026
Arizona Diamondbacks2 games
1-1his teams
His line: 1.1 IP, 2 K, 0.00 ERA
Last met Aug 29, 2026
Cincinnati Reds2 games
1-1his teams
His line: 1.2 IP, 0 K, 0.00 ERA
Last met Aug 26, 2026
Colorado Rockies2 games
0-2his teams
His line: 1.0 IP, 1 K, 9.00 ERA
Last met Aug 16, 2026
Houston Astros2 games
1-1his teams
His line: 1.1 IP, 2 K, 0.00 ERA
Last met Aug 12, 2026
Injury history
ESPN's injury reports, newest first.
- Sep 19, 202615-Day-IL Oblique
The Giants placed Sanmartin on the 15-day injured list Saturday, retroactive to Sept. 17, with a right oblique strain, Justice delos Santos of The San Jose Mercury News reports.
ESPN / SF
Sources and updates
Stats, scores and injury reports come from Agatha's own records: the SABR Lahman Baseball Database for the seasons through 2025, MLB's own box scores, its transactions and ESPN's injury reports.
Updated Nov 11, 2026, 7:24 AM ET. Results and form refresh after every game; biography facts are checked weekly.