MLB · Cardinals · RP
Riley O'Brien ERA
2026 season62 games
Search ResultRiley O'Brien — ERA63 games
Riley O'Brien has a 4.13 ERA this season (28 ER over 61 IP) — 11.88 over the last 10 games (11 ER over 8.1 IP).
L5
8.31
L10
11.88
L20
5.40
SZN
4.13
Riley O'Brien's page — season line, the game-by-game log, tonight's matchup.