RO
Baseball · MLB · P
← All playersRiley O'Brien
St. Louis Cardinals · 49 pitching games · bats R · throws R
Compare opens a player picker · 2026 regular season · latest
ERA3.1417 ER
WHIP1.1335 H · 20 BB
Strikeouts49205 faced
Innings48.249 G · 0 GS
Record3–430 SV · 1 HLD
Pitches799488 strikes
Season by season
| Season | Team | Age | Pos | G | GS | IP | BF | H | ER | BB | K | Pit | Str | W | L | SV | HLD | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | St. Louis Cardinals | 31 | P | 49 | 0 | 48.2 | 205 | 35 | 17 | 20 | 49 | 799 | 488 | 3 | 4 | 30 | 1 | 3.14 | 1.13 |
| 2025 | St. Louis Cardinals | 30 | P | 42 | 0 | 48.0 | 199 | 33 | 11 | 22 | 45 | 758 | 470 | 3 | 1 | 6 | 6 | 2.06 | 1.15 |
| 2024 | St. Louis Cardinals | 29 | P | 8 | 0 | 8.0 | 46 | 13 | 10 | 8 | 11 | 194 | 108 | 0 | 0 | 0 | 0 | 11.25 | 2.63 |
| 2022 | Seattle Mariners | 27 | P | 1 | 0 | 1.0 | 5 | 1 | 0 | 1 | 1 | 23 | 14 | 0 | 0 | 0 | 0 | 0.00 | 2.00 |
| 2021 | Cincinnati Reds | 26 | P | 1 | 1 | 1.1 | 9 | 2 | 2 | 3 | 2 | 42 | 22 | 0 | 1 | 0 | 0 | 13.50 | 3.75 |
| Career | 5 SSN | — | — | 101 | 1 | 107.0 | 464 | 84 | 40 | 54 | 108 | 1,816 | 1,102 | 6 | 6 | 36 | 7 | — | — |
Newest first, with the highlighted row the one the season picker is showing. The career row sums the counting columns and leaves every rate blank.
2026 stat line
Workload
Games49
Starts0
Innings48.2
Batters faced205
Pitches799
Strikes488
Outcomes
Hits allowed35
Earned runs17
Walks20
Strikeouts49
Wins3
Losses4
Saves30
Holds1
Rates
ERA3.14
WHIP1.13
K per 99.1
BB per 93.7
Official pitching totals and rates for the selected season. A dash means that field is unavailable, not zero.