St. Louis Cardinals · No. 61 · P
Riley O'Brien
6' 4", 180 lbs·Age 31·Bats R / Throws R
↑ HotL4 games
2026 · 37 G
3.62
ERA
3-3
W-L
37.3
IP
1.15
WHIP
36
SO
12
BB
8.7
K/9
22
SV
The Almanac's Take
AI-generated analysis coming soon.
Career Arc · ERA
4 seasonsLast 10 Games
| Date | IP | H | ER | BB | SO | HR | Dec |
|---|---|---|---|---|---|---|---|
| Jul 8 | 1 | 1 | 0 | 0 | 1 | 0 | — |
| Jul 4 | 1 | 0 | 0 | 1 | 1 | 0 | S |
| Jun 30 | 1 | 1 | 0 | 0 | 0 | 0 | S |
| Jun 28 | 1 | 0 | 0 | 0 | 1 | 0 | S |
| Jun 22 | 1 | 0 | 0 | 0 | 0 | 0 | S |
| Jun 21 | 1 | 2 | 2 | 0 | 1 | 1 | — |
| Jun 16 | 1 | 0 | 0 | 1 | 0 | 0 | S |
| Jun 13 | 1 | 0 | 1 | 3 | 1 | 0 | — |
| Jun 7 | 1 | 1 | 0 | 0 | 1 | 0 | S |
| Jun 6 | 1 | 2 | 0 | 1 | 1 | 0 | S |
Career · Pitching
5 seasons| Year | Team | G | IP | W | L | ERA | ERA+ | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|
| 2021 | — | 1 | 1.1 | 0 | 1 | 13.50 | — | 2 | 3.75 |
| 2022 | — | 1 | 1.0 | 0 | 0 | 0.00 | — | 1 | 2.00 |
| 2024 | — | 8 | 8.0 | 0 | 0 | 11.25 | — | 11 | 2.63 |
| 2025 | — | 42 | 48.0 | 3 | 1 | 2.06 | — | 45 | 1.15 |
| 2026 | — | 37 | 37.1 | 3 | 3 | 3.62 | — | 36 | 1.15 |
| Career | 89 | 95.2 | 6 | 5 | — | — | 95 | — | |
Ask The Almanac about Riley O'Brien.
Matchups, projections, comps — grounded in Lahman, Retrosheet, and Statcast.