St. Louis Cardinals· #61· Pitcher
Riley O'Brien
Bats R · Throws R·Age 31 (Feb 6, 1995)·6' 4", 180 lb·Seattle, WA, USA
2026 Pitching
ERA
4.08
WHIP
1.28
IP
64.0
K%
23.2
BB%
10.5
K/9
9.00
W-L
3-9
GS
0
SV
38
HLD
1
DiamondIQ WAR
64.0 IP · 2026
0.5
5.2 runs above replacement
FIP · 3.94 (park 0.95)0.0
vs replacement · RP, 64.0 IP+5.2
FIP-based runs above replacement, park-adjusted, scaled by innings over runs-per-win. Reliever leverage is simplified (v1). Full methodology.
Pitch Arsenal · Statcast
Sinker58% · 97.7 · 17% whiff
Sweeper33% · 82.9 · 47% whiff
Slider8% · 90.6 · 21% whiff
Changeup1% · 91.0 · 67% whiff
Career Pitching
| Yr | Tm | W | L | ERA | G | GS | SV | IP | SO | BB | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | St. Louis Cardinals | 3 | 9 | 4.08 | 66 | 0 | 38 | 64.0 | 64 | 29 | 1.28 | 9.00 |
| 2025 | St. Louis Cardinals | 3 | 1 | 2.06 | 42 | 0 | 6 | 48.0 | 45 | 22 | 1.15 | 8.44 |
| 2024 | St. Louis Cardinals | 0 | 0 | 11.25 | 8 | 0 | 0 | 8.0 | 11 | 8 | 2.63 | 12.38 |
| 2022 | Seattle Mariners | 0 | 0 | 0.00 | 1 | 0 | 0 | 1.0 | 1 | 1 | 2.00 | 9.00 |
| 2021 | Cincinnati Reds | 0 | 1 | 13.50 | 1 | 1 | 0 | 1.1 | 2 | 3 | 3.75 | 13.50 |
Recent Games
Sep 20 vs Washington NationalsW
1.0 IP, 0 ER, 0 K, 0 BB
Sep 19 vs Washington NationalsL
1.0 IP, 0 ER, 2 K, 0 BB
Sep 16 vs San Francisco GiantsL
1.0 IP, 1 ER, 0 K, 1 BB
Sep 14 vs San Francisco GiantsW
1.0 IP, 0 ER, 2 K, 1 BB
Sep 12 vs Chicago White SoxL
1.0 IP, 2 ER, 2 K, 1 BB
Sep 11 vs Chicago White SoxW
1.0 IP, 0 ER, 1 K, 0 BB
Sep 7 @ San Francisco GiantsL
1.0 IP, 0 ER, 0 K, 2 BB
Sep 4 @ Colorado RockiesW
1.0 IP, 0 ER, 2 K, 0 BB
Sep 3 @ Los Angeles DodgersL
0.1 IP, 2 ER, 0 K, 1 BB
Sep 2 @ Los Angeles DodgersW
1.0 IP, 0 ER, 1 K, 0 BB