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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 1
Wins Clay Holmes, Steven Matz, Chris Sale, Lance McCullers Jr., Max Fried, Ryne Stanek, Chris Martin, Anthony Banda, Jeff Hoffman, Jim Abbott
1 1
2 12
Strikeouts Dylan Cease
218 1
2.1 7.0
Innings pitched Lance McCullers Jr., Sandy Alcantara, Trevor Rogers, Eury Perez
179 1
1 3
Holds Erik Sabrowski
14 1
2 3
Games Pierce Johnson, Gabe Speier, Shawn Armstrong, Tyler Alexander, Garrett Cleavinger, Jordan Hicks, Griffin Jax, Wandy Peralta, Doug Brady
37 1
1 1
Wins Ryne Stanek, Riley O'Brien
1 1
2 5
Strikeouts Michael McGreevy
5 1
2.1 6.0
Innings pitched Michael McGreevy
7 1
1 2
Holds JoJo Romero
2 1
2 3
Games Matt Svanson
2 1
1 2
Holds Pierce Johnson, Tobias Myers, Tony Santillan, JoJo Romero, Graham Ashcraft
6 1
2 3
Games Pierce Johnson, Wandy Peralta, Tanner Scott, Justin Lawrence, Ryan Thompson, Dennis Santana, Matt Gage, Isaac Mattson, Hector Carrasco
17 1
2.1 7.0
Innings pitched Sandy Alcantara, Eury Perez
85 1
1 1
Wins Chris Sale, Ryne Stanek, Foster Griffin, Brock Burke, Sandy Alcantara, Freddy Peralta, Michael Soroka, Jake Woodford, Mark Brandenburg
1 1
2 224
Strikeouts Logan Webb
106 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 2 0 0 0 0 1 2.1 3 0 0 0 0 2 1.29
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
2026-03-30 - - - - - - - - - - - 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 -
2026-03-26 0 W 0 0 1.1 1 0 0 0 0 2 1 0 0 0 0.75 -
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.