Riley O`Brien
2021–2026 · bats R / throws R · Cincinnati Reds, Seattle Mariners, St. Louis Cardinals
116G
–AVG
–OBP
–SLG
More career statistics
0H
0HR
0RBI
0SB
6–11W–L
122.1IP
123K
3.83ERA
1GS
44SV
Career summary: MLB’s official regular-season totals. Season lines, splits and historical game logs below are reconstructed from the covered Retrosheet records and can differ in coverage or scorer revisions. Compare sources and coverage.
Why official totals and the game-record sums differ
The sources can disagree on historical scorer decisions, appearances, and which games belong to a major-league record. The career summary uses the official total; the source game rows retain their recorded values.
| Statistic | MLB official | Recorded game sum |
|---|---|---|
| Batting · Games | 116 | 118 |
Career batting
| G | PA | AB | R | H | 2B | 3B | HR | RBI | BB | K | SB | CS | HBP | SF | TB | AVG | OBP | SLG | OPS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 116 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | – | – | – | – |
Career pitching
| IP | G | GS | CG | W | L | SV | H | R | ER | HR | BB | K | HBP | WP | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 122.3 | 118 | 1 | 0 | 6 | 11 | 44 | 102 | 60 | 52 | 11 | 63 | 123 | 0 | 0 | 3.83 | 1.349 |
Season by season
| Year | Team | G | AB | H | HR | RBI | SB | AVG | IP | K |
|---|---|---|---|---|---|---|---|---|---|---|
| 2021 |  Cincinnati Reds | 1 | – | – | – | – | – | – | 1 | 2 |
| 2022 |  Seattle Mariners | 1 | – | – | – | – | – | – | 1 | 1 |
| 2024 |  St. Louis Cardinals | 8 | – | – | – | – | – | – | 8 | 11 |
| 2025 | St. Louis Cardinals | 42 | – | – | – | – | – | – | 48 | 45 |
| 2026 | St. Louis Cardinals | 66 | – | – | – | – | – | – | 64 | 64 |