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
3.43
WHIP
1.12
IP
39.1
K%
23.6
BB%
7.9
K/9
8.92
W-L
3-3
GS
0
SV
24
HLD
1
DiamondIQ WAR
39.3 IP · 2026
0.7
6.5 runs above replacement
FIP · 3.30 (park 0.94)0.0
vs replacement · RP, 39.3 IP+6.5
FIP-based runs above replacement, park-adjusted, scaled by innings over runs-per-win. Reliever leverage is simplified (v1). Full methodology.
Pitch Arsenal · Statcast
Sinker59% · 98.2 · 18% whiff
Sweeper30% · 83.6 · 48% whiff
Slider10% · 91.3 · 23% whiff
Changeup1% · 90.9 · 100% whiff
Career Pitching
| Yr | Tm | W | L | ERA | G | GS | SV | IP | SO | BB | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | St. Louis Cardinals | 3 | 3 | 3.43 | 39 | 0 | 24 | 39.1 | 39 | 13 | 1.12 | 8.92 |
| 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
Jul 11 vs Atlanta BravesW
1.0 IP, 0 ER, 1 K, 1 BB
Jul 10 vs Atlanta BravesW
1.0 IP, 0 ER, 2 K, 0 BB
Jul 8 vs Milwaukee BrewersW
1.0 IP, 0 ER, 1 K, 0 BB
Jul 4 @ Chicago CubsW
1.0 IP, 0 ER, 1 K, 1 BB
Jun 30 @ Atlanta BravesW
1.0 IP, 0 ER, 0 K, 0 BB
Jun 28 vs Miami MarlinsW
1.0 IP, 0 ER, 1 K, 0 BB
Jun 22 vs Arizona DiamondbacksW
1.0 IP, 0 ER, 0 K, 0 BB
Jun 21 @ Kansas City RoyalsW
1.0 IP, 2 ER, 1 K, 0 BB
Jun 16 vs San Diego PadresW
1.0 IP, 0 ER, 0 K, 1 BB
Jun 13 @ Minnesota TwinsW
1.0 IP, 1 ER, 1 K, 3 BB