Riley O'Brien

Riley O'Brien

30-Year-Old PitcherRP
St. Louis Cardinals AAA
2025 Fantasy Outlook
There was no outlook written for Riley O'Brien in 2025. Check out the latest news below for more on his current fantasy value.
$Signed a one-year contract with the Cardinals in March of 2025.
Optioned to Triple-A
PSt. Louis Cardinals  AAA
March 15, 2025
The Cardinals optioned O'Brien to Triple-A Memphis on Saturday.
ANALYSIS
O'Brien made his return Friday from an elbow issue that held him out for two weeks, but he'll now head back to Memphis to begin the 2025 campaign. The 30-year-old righty owns a 10.45 ERA over 10.1 career MLB innings, though St. Louis may be willing to give him another shot if he can replicate his 1.35 ERA in Triple-A from last year.
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Pitching Stats
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2024
2022
2021
2024 MLB Game Log
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Scoring
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2022 MLB Game Log
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2021 MLB Game Log
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Left/Right Pitching Splits
Since 2023
 
 
-17%
BAA vs RHP
2025
No Stats
2024
 
 
-17%
BAA vs RHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .400 20 4 4 6 1 1 1
Since 2023vs Right .333 26 7 4 7 1 0 1
2025vs Left 0 0 0 0 0 0 0 0
2025vs Right 0 0 0 0 0 0 0 0
2024vs Left .400 20 4 4 6 1 1 1
2024vs Right .333 26 7 4 7 1 0 1
2023vs Left 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0
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Home/Away Pitching Splits
Since 2023
 
 
-81%
ERA at Home
2025
No Stats
2024
 
 
-81%
ERA at Home
2023
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 3.00 1.33 3.0 0 0 0 6.0 6.0 0.0
Since 2023Away 16.20 3.40 5.0 0 0 0 16.2 10.8 3.6
2025Home 0 0 0 0 0 0 0 0 0
2025Away 0 0 0 0 0 0 0 0 0
2024Home 3.00 1.33 3.0 0 0 0 6.0 6.0 0.0
2024Away 16.20 3.40 5.0 0 0 0 16.2 10.8 3.6
2023Home 0 0 0 0 0 0 0 0 0
2023Away 0 0 0 0 0 0 0 0 0
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Defensive Stats
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Stats Vs Today's Lineup
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More Fantasy News
Returns from elbow issue
PSt. Louis Cardinals  AAA
March 15, 2025
O'Brien tossed a scoreless inning Friday versus the Mets after being unavailable for more than two weeks due to right elbow soreness, Derrick Goold of the St. Louis Post-Dispatch reports.
ANALYSIS
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Recalled from Triple-A
PSt. Louis Cardinals  AAA
August 27, 2024
The Cardinals recalled O'Brien from Triple-A Memphis on Tuesday, Katie Woo of The Athletic reports.
ANALYSIS
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Activated, sent to Triple-A
PSt. Louis Cardinals  AAA
August 11, 2024
The Cardinals activated O'Brien (forearm) from the 60-day injured list Sunday and optioned him to Triple-A Memphis.
ANALYSIS
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Could be activated next week
PSt. Louis Cardinals  AAA
Forearm
August 2, 2024
O'Brien (forearm) could be activated from the 60-day injured list next week after making two more rehab appearances with Triple-A Memphis, John Denton of MLB.com reports.
ANALYSIS
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Starting rehab assignment
PSt. Louis Cardinals  AAA
Forearm
July 19, 2024
O'Brien (forearm) will begin a rehab assignment with Triple-A Memphis on Friday, John Denton of MLB.com reports.
ANALYSIS
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Latest Fantasy Rumors
Eligible for promotion Monday
PSt. Louis Cardinals  AAA
August 25, 2024
O'Brien will be eligible to be recalled by the Cardinals on Monday, and Jeff Jones of the Belleville News-Democrat speculates the right-hander could be called up from Triple-A Memphis at some point this week.
ANALYSIS
O'Brien could have joined the Cardinals over the past couple weeks if the corresponding move was an IL transaction, but he's stayed a Triple-A for the full 15 days. The 29-year-old has made just one appearance in the majors this season but has been dominant in 13 outings for Memphis with a 1.46 ERA, 0.99 WHIP and 9:5 K:BB over 12.1 innings.
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