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
3.95
WHIP
1.23
IP
54.2
K%
23.0
BB%
9.8
K/9
8.89
W-L
3-6
GS
0
SV
34
HLD
1
DiamondIQ WAR
54.7 IP · 2026
0.7
6.5 runs above replacement
FIP · 3.63 (park 0.94)0.0
vs replacement · RP, 54.7 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
Sinker60% · 97.9 · 17% whiff
Sweeper32% · 83.1 · 44% whiff
Slider8% · 90.8 · 20% whiff
Changeup1% · 90.8 · 100% whiff
Career Pitching
| Yr | Tm | W | L | ERA | G | GS | SV | IP | SO | BB | WHIP | K/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | St. Louis Cardinals | 3 | 6 | 3.95 | 56 | 0 | 34 | 54.2 | 54 | 23 | 1.23 | 8.89 |
| 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
Aug 27 vs Baltimore OriolesW
1.0 IP, 0 ER, 1 K, 0 BB
Aug 26 vs Baltimore OriolesL
1.0 IP, 1 ER, 0 K, 0 BB
Aug 23 @ Philadelphia PhilliesL
0.2 IP, 6 ER, 0 K, 1 BB
Aug 20 @ Cincinnati RedsW
0.1 IP, 0 ER, 0 K, 2 BB
Aug 18 @ Cincinnati RedsW
1.0 IP, 0 ER, 1 K, 0 BB
Aug 17 @ Cincinnati RedsW
1.0 IP, 0 ER, 3 K, 0 BB
Aug 15 @ Chicago CubsW
1.0 IP, 0 ER, 0 K, 0 BB
Aug 11 vs Philadelphia PhilliesW
1.0 IP, 0 ER, 1 K, 0 BB
Aug 9 vs Colorado RockiesW
1.0 IP, 0 ER, 0 K, 0 BB
Aug 7 vs Colorado RockiesW
1.0 IP, 0 ER, 0 K, 1 BB