Riley O'Brien

St. Louis Cardinals · #61 · P · Bats R / Throws R · Age 31

2026 season

3-9, 4.08 ERA, 1.28 WHIP, 64 K over 64.0 IP.

W-L3-9
ERA4.08
G66
GS0
IP64.0
H53
ER29
BB29
SO64
WHIP1.28
K/99.00
AVG against.227

Last 10 games

DateOpponentLine
September 20, 2026vs Washington Nationals1.0 IP, 0 ER, 0 K, 0 BB
September 19, 2026vs Washington Nationals1.0 IP, 0 ER, 2 K, 0 BB
September 16, 2026vs San Francisco Giants1.0 IP, ER, 0 K, BB
September 14, 2026vs San Francisco Giants1.0 IP, 0 ER, 2 K, BB
September 12, 2026vs Chicago White Sox1.0 IP, 2 ER, 2 K, BB
September 11, 2026vs Chicago White Sox1.0 IP, 0 ER, K, 0 BB
September 7, 2026@ San Francisco Giants1.0 IP, 0 ER, 0 K, 2 BB
September 4, 2026@ Colorado Rockies1.0 IP, 0 ER, 2 K, 0 BB
September 3, 2026@ Los Angeles Dodgers0.1 IP, 2 ER, 0 K, BB
September 2, 2026@ Los Angeles Dodgers1.0 IP, 0 ER, K, 0 BB

2026 platoon splits

vs LHP.244 AVG against, 29 K in 33.0 IP
vs RHP.209 AVG against, 35 K in 30.1 IP

Game logs, platoon splits and the model’s projection for Riley O'Brien update daily, alongside the rest of the St. Louis Cardinals roster.

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