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RILEY O'BRIEN
#61 - P
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88342
Status On roster
Ht/Wt 6’4’’, 180 lbs
Bats/Throws R / R
Experience 2 years
Debut Sep 28, 2021
Born Feb 6, 1995 (31 yrs) Shoreline, Washington
Drafted Drafted by Tampa Bay in 2017 (8/229).
Drafted from Col of Idaho
Acquired Acquired in a trade with Seattle in 2023.
VS.
Riley O'Brien
Leader
STAT RANK
1 2
Wins Chris Sale, Max Fried, Sandy Alcantara, Trevor Rogers, Aaron Ashby, Jose Soriano, Cam Schlittler
8 1
4 21
Strikeouts Kevin Gausman
141 1
1 3
Saves David Bednar
11 1
4.1 16.0
Innings pitched Sandy Alcantara
124 1
1 4
Holds Erik Sabrowski
23 1
4 4
Games Pierce Johnson, Ryne Stanek, Shawn Armstrong, Jeff Hoffman, Tyler Alexander, JoJo Romero, Griffin Jax, Tanner Scott, Doug Brocail
1 1
1 1
Wins Riley O'Brien, Andre Pallante, Gordon Graceffo
1 1
4 5
Strikeouts Ryne Stanek, Michael McGreevy
3 1
1 1
Saves Ryne Stanek, Riley O'Brien
1 1
4.1 11.0
Innings pitched Matthew Liberatore
5 1
1 3
Holds JoJo Romero
2 1
4 4
Games Ryne Stanek, JoJo Romero, Riley O'Brien
1 1
1 3
Holds JoJo Romero
9 1
4 4
Games Pierce Johnson, Ryne Stanek, JoJo Romero, Tanner Scott, Jhoan Duran, Brennan Bernardino, Justin Lawrence, Gregory Soto, Tom Browning
1 1
4.1 16.0
Innings pitched Sandy Alcantara
66 1
1 2
Wins Chris Sale, Sandy Alcantara, Aaron Ashby
4 1
4 224
Strikeouts Logan Webb
71 1
1 2
Saves Edwin Diaz, Pete Fairbanks, Paul Sewald, Jhoan Duran, Mason Miller
6 1
Season Stats
Pitcher
W
Wins
 L
Losses
 ERA
Earned Run Average
 G
Games
 GS
Games Started
 CG
Complete Games
 SHO
Shutouts
 SV
Saves
 HLD
Holds
 IP
Innings Pitched
 H
Hits Allowed
 R
Runs Allowed
 ER
Earned Runs
 HR
Home Runs Allowed
 BB
Walks
 SO
Strikeouts
 WHIP
Walks and Hits Per Inning Pitched
YTD 1 0 0 4 0 0 0 1 1 4.1 4 0 0 0 0 4 0.92
Game Log
Pitcher
Date Team Opp GS
Games Started
Dec CG
Complete Games
SHO
Shutouts
IP
Innings Pitched
H
stats.by_season.headers.baseball.pitching.regular-season.tooltipss.h
R
stats.by_season.headers.baseball.pitching.regular-season.tooltipss.r
ER
Earned Runs
HR
Home Runs Allowed
BB
Walks
K YTD W YTD L YTD SV YTD ERA YTD WHIP Status
2026-04-01 0 - 0 0 1.0 1 0 0 0 0 2 1 0 1 0 0.92 -
2026-03-31 0 Sv 0 0 1.0 0 0 0 0 0 0 1 0 1 0 0.9 -
2026-03-30 - - - - - - - - - - - 1 0 0 0 - DNP
2026-03-29 - - - - - - - - - - - 1 0 0 0 - DNP
2026-03-28 0 H 0 0 1.0 2 0 0 0 0 0 1 0 0 0 1.29 -
Transactions & Injuries
Date Description
2025-09-06 Missed 5 games (Shoulder soreness - right).
2025-08-31 Shoulder soreness - right, day-to-day.
2025-06-09 Recalled from Memphis (AAA).
2025-06-06 Optioned to Memphis (AAA).
2025-06-05 Recalled from Memphis (AAA).
News
Rotowire
Sun, Mar 29, 2026 at 10:27 AM

O'Brien yielded two hits in a scoreless frame to pick up his first hold of the season in Saturday's extra-inning win over the Rays.

Sun, Mar 08, 2026 at 1:28 PM

O'Brien (calf) worked around a walk and a base hit to deliver a scoreless inning of relief Saturday in the Cardinals' 3-2 loss to the Mets in Grapefruit League play.