Major League Baseball PLAYER PROFILE
Riley O'Brien
St. Louis Cardinals · Pitcher · #61
Riley O'Brien is a pitcher for St. Louis Cardinals. Bats right. Throws right. MLB debut: 2021-09-28.
2026 season · Major League Baseball
ERA3.43
WHIP1.19
W-L3-4
G45
GS0
IP44.2
SO47
BB18
K/99.47
BB/93.63
HR/90.40
Career totals
ERA3.50
WHIP1.32
W-L6-6
G97
GS1
IP103.0
SO106
SV32
Advanced profile
BABIP.292
HR/90.40
P/IP16.72
Fielding
FLD%.933
G45
GS0
INN44.2
PO6
A8
E1
DP0
Bio
Age31
Height6' 4"
Weight180
BatsRight
ThrowsRight
BornSeattle, USA
Draft2017
MLB debut2021-09-28
StatusActive
Last 8 games
| Date | Opponent | Performance |
|---|---|---|
| 2026-08-02 | at Toronto Blue Jays | 1.0 IP · 1 SO · 0 ER · 18 pitches |
| 2026-07-30 | vs Chicago Cubs | 1.0 IP · 1 SO · 0 ER · 17 pitches |
| 2026-07-29 | vs Chicago Cubs | 1.0 IP · 1 SO · 0 ER · 18 pitches |
| 2026-07-22 | at Los Angeles Angels | 1.0 IP · 3 SO · 0 ER · 26 pitches |
| 2026-07-20 | at Los Angeles Angels | 0.1 IP · 1 SO · 2 ER · 21 pitches |
| 2026-07-17 | at Arizona Diamondbacks | 1.0 IP · 1 SO · 0 ER · 16 pitches |
| 2026-07-11 | vs Atlanta Braves | 1.0 IP · 1 SO · 0 ER · 18 pitches |
| 2026-07-10 | vs Atlanta Braves | 1.0 IP · 2 SO · 0 ER · 12 pitches |
Recent transactions
National League All-Stars activated RHP Riley O'Brien.
RHP Riley O'Brien changed number to 61.
RHP Riley O'Brien changed number to 42.
Korea activated RHP Riley O'Brien.
RHP Riley O'Brien changed number to 61.
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