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Riley O'Brien: Everything you need to know

Riley O’Brien

Riley O'Brien

#61 RP
St. Louis Cardinals

STATS

Riley O’Brien

Riley O’Brien Game Log   2026

  • Regular Season
     
    Date
    Opp
    Result
    IP
    K
    BB
    HBP
    CG
    SHO
    H
    R
    ER
    8/2
    TOR
    W 5-1
    1.0
    1
    0
    0
    0
    0
    1
    0
    0
    7/30
    CHC
    L 4-2
    1.0
    1
    0
    0
    0
    0
    0
    0
    0
    7/29
    CHC
    W 3-2
    1.0
    1
    0
    1
    0
    0
    0
    0
    0
    7/22
    LAA
    W 1-0
    1.0
    3
    2
    0
    0
    0
    0
    0
    0
    7/17
    AZ
    W 5-4
    1.0
    1
    1
    0
    0
    0
    1
    0
    0
    7/11
    ATL
    W 4-1
    1.0
    1
    1
    1
    0
    0
    0
    0
    0
    7/10
    ATL
    W 2-1
    1.0
    2
    0
    0
    0
    0
    0
    0
    0
    7/8
    MIL
    W 5-1
    1.0
    1
    0
    0
    0
    0
    1
    0
    0
    6/30
    ATL
    W 5-3
    1.0
    0
    0
    0
    0
    0
    1
    0
    0
    6/28
    MIA
    W 2-1
    1.0
    1
    0
    0
    0
    0
    0
    0
    0
    6/22
    AZ
    W 3-2
    1.0
    0
    0
    0
    0
    0
    0
    0
    0
    6/16
    SD
    W 3-2
    1.0
    0
    1
    0
    0
    0
    0
    0
    0
    6/7
    CIN
    W 5-3
    1.0
    1
    0
    0
    0
    0
    1
    0
    0
    6/6
    CIN
    W 6-5
    1.0
    1
    1
    0
    0
    0
    2
    0
    0
    6/3
    TEX
    W 5-3
    1.0
    0
    1
    0
    0
    0
    0
    0
    0
    6/2
    TEX
    L 7-4
    1.0
    2
    1
    0
    0
    0
    3
    3
    3
    5/29
    CHC
    W 6-5
    1.0
    0
    0
    0
    0
    0
    1
    1
    1
    5/23
    CIN
    L 7-6
    1.1
    2
    1
    0
    0
    0
    0
    1
    0
    5/19
    PIT
    W 9-6
    1.0
    0
    1
    2
    0
    0
    2
    2
    2
    5/15
    KC
    W 5-4
    1.0
    0
    0
    0
    0
    0
    1
    0
    0
    5/14
    ATH
    W 5-4
    1.0
    2
    0
    1
    0
    0
    0
    0
    0
    5/12
    ATH
    W 6-4
    1.0
    0
    1
    0
    0
    0
    0
    0
    0
    5/10
    SD
    L 3-2
    1.0
    3
    0
    0
    0
    0
    2
    2
    2
    5/7
    SD
    W 2-1
    1.0
    1
    0
    0
    0
    0
    0
    0
    0
    5/4
    MIL
    W 6-3
    0.2
    0
    0
    0
    0
    0
    0
    0
    0
    5/2
    LAD
    W 3-2
    1.0
    2
    0
    0
    0
    0
    4
    2
    2
    4/29
    PIT
    W 5-4
    1.0
    1
    0
    0
    0
    0
    1
    0
    0
    4/25
    SEA
    L 11-9
    1.0
    1
    1
    1
    0
    0
    4
    2
    2
    4/21
    MIA
    W 5-3
    1.0
    1
    0
    0
    0
    0
    1
    0
    0
    4/19
    HOU
    W 7-5
    1.1
    2
    0
    0
    0
    0
    1
    0
    0
    4/18
    HOU
    W 7-5
    0.2
    1
    0
    0
    0
    0
    0
    0
    0
    4/15
    CLE
    W 5-3
    1.0
    2
    0
    0
    0
    0
    0
    0
    0
    4/10
    BOS
    W 3-2
    1.0
    1
    0
    0
    0
    0
    0
    0
    0
    4/8
    WSH
    W 6-1
    1.0
    0
    0
    0
    0
    0
    0
    0
    0
    4/7
    WSH
    W 7-6
    1.0
    2
    0
    1
    0
    0
    0
    1
    0
    4/5
    DET
    W 5-3
    1.0
    1
    0
    0
    0
    0
    0
    0
    0
    4/1
    NYM
    W 2-1
    1.0
    2
    0
    0
    0
    0
    1
    0
    0
    3/31
    NYM
    W 3-0
    1.0
    0
    0
    0
    0
    0
    0
    0
    0
    3/28
    TB
    W 6-5
    1.0
    0
    0
    0
    0
    0
    2
    0
    0
    3/26
    TB
    W 9-7
    1.1
    2
    0
    0
    0
    0
    1
    0
    0
    Regular Season Totals
    38.7
    42
    12
    7
    0
    0
    31
    14
    12
Riley O’Brien

Riley O’Brien Splits   2026

  • Splits
    GS
    IP
    W
    L
    ERA
    K
    BB
    HBP
    CG
    H
    R
    ER
    SVO
    S
    AVG
    HR
    Overall
    0
    44.2
    3
    4
    0.0
    47
    16
    10
    0
    35
    19
    17
    31
    26
    0.217
    2
    Away
    0
    19.2
    1
    2
    0.0
    25
    9
    0
    0
    12
    9
    7
    15
    12
    0.179
    2
    Home
    0
    25.0
    2
    2
    0.0
    22
    7
    0
    0
    23
    10
    10
    16
    14
    0.245
    0
    Night
    0
    27.0
    1
    3
    0.0
    23
    9
    0
    0
    18
    12
    10
    22
    20
    0.194
    0
    Day
    0
    17.2
    2
    1
    0.0
    24
    7
    0
    0
    17
    7
    7
    9
    6
    0.250
    2
    vs Righty
    0
    0.0
    0
    0
    0.0
    28
    7
    4
    0
    16
    9
    0
    0
    0
    0.198
    1
    vs Lefty
    0
    0.0
    0
    0
    0.0
    19
    9
    6
    0
    19
    10
    0
    0
    0
    0.238
    1
    March
    0
    3.1
    1
    0
    0.0
    2
    0
    0
    0
    3
    0
    0
    1
    1
    0.250
    0
    April
    0
    12.0
    2
    1
    0.0
    15
    1
    0
    0
    8
    3
    2
    9
    7
    0.186
    0
    May
    0
    10.0
    0
    1
    0.0
    10
    3
    0
    0
    10
    8
    7
    8
    6
    0.270
    1
    June
    0
    10.0
    0
    1
    0.0
    7
    7
    0
    0
    9
    6
    6
    7
    7
    0.237
    1
    July
    0
    8.1
    0
    1
    0.0
    12
    5
    0
    0
    4
    2
    2
    6
    5
    0.148
    0
    August
    0
    1.0
    0
    0
    0.0
    1
    0
    0
    0
    1
    0
    0
    0
    0
    0.250
    0
    Opponent
    vs WSH 0 2.0 0 0 0.0 2 0 0 0 0 1 0 1 1 0.000 0
    vs MIN 0 1.0 0 0 0.0 1 3 0 0 0 1 1 0 0 0.000 0
    vs NYM 0 2.0 0 0 0.0 2 0 0 0 1 0 0 1 1 0.143 0
    vs LAD 0 1.0 0 0 0.0 2 0 0 0 4 2 2 1 1 0.571 0
    vs MIL 0 1.2 0 0 0.0 1 0 0 0 1 0 0 1 1 0.167 0
    vs BOS 0 1.0 0 0 0.0 1 0 0 0 0 0 0 1 1 0.000 0
    vs DET 0 1.0 0 0 0.0 1 0 0 0 0 0 0 1 1 0.000 0
    vs CLE 0 2.0 1 0 0.0 3 0 0 0 0 0 0 1 1 0.000 0
    vs SEA 0 1.0 0 1 0.0 1 1 0 0 4 2 2 1 0 0.571 0
    vs PIT 0 2.0 0 0 0.0 1 1 0 0 3 2 2 2 1 0.375 0
    vs CIN 0 3.1 0 1 0.0 4 2 0 0 3 1 0 2 2 0.231 0
    vs ATL 0 3.0 0 0 0.0 3 1 0 0 1 0 0 3 3 0.100 0
    vs KC 0 2.0 0 0 0.0 1 0 0 0 3 2 2 0 0 0.375 1
    vs CHC 0 4.0 0 0 0.0 3 1 0 0 1 1 1 2 2 0.083 0
    vs TEX 0 2.0 0 1 0.0 2 2 0 0 3 3 3 1 1 0.375 0
    vs HOU 0 2.0 1 0 0.0 3 0 0 0 1 0 0 2 1 0.167 0
    vs TB 0 2.1 1 0 0.0 2 0 0 0 3 0 0 0 0 0.333 0
    vs ATH 0 2.0 0 0 0.0 2 1 0 0 0 0 0 2 2 0.000 0
    vs AZ 0 2.0 0 0 0.0 1 1 0 0 1 0 0 2 2 0.167 0
    vs LAA 0 1.1 0 1 0.0 4 2 0 0 2 2 2 2 1 0.333 0
    vs TOR 0 1.0 0 0 0.0 1 0 0 0 1 0 0 0 0 0.250 0
    vs SD 0 3.0 0 0 0.0 4 1 0 0 2 2 2 3 2 0.182 1
    vs MIA 0 2.0 0 0 0.0 2 0 0 0 1 0 0 2 2 0.143 0
    Venue
    @ Detroit 0 1.0 0 0 0.0 1 0 0 0 0 0 0 1 1 0.000 0
    @ Houston 0 2.0 1 0 0.0 3 0 0 0 1 0 0 2 1 0.167 0
    @ Athletics 0 2.0 0 0 0.0 2 1 0 0 0 0 0 2 2 0.000 0
    @ Chicago 0 1.0 0 0 0.0 1 1 0 0 0 0 0 1 1 0.000 0
    @ Cincinnati 0 1.1 0 1 0.0 2 1 0 0 0 1 0 0 0 0.000 0
    @ Atlanta 0 1.0 0 0 0.0 0 0 0 0 1 0 0 1 1 0.250 0
    @ Washington 0 2.0 0 0 0.0 2 0 0 0 0 1 0 1 1 0.000 0
    @ St. Louis 0 25.0 2 2 0.0 22 7 0 0 23 10 10 16 14 0.245 0
    @ Arizona 0 1.0 0 0 0.0 1 1 0 0 1 0 0 1 1 0.333 0
    @ Minnesota 0 1.0 0 0 0.0 1 3 0 0 0 1 1 0 0 0.000 0
    @ Kansas City 0 1.0 0 0 0.0 1 0 0 0 2 2 2 0 0 0.400 1
    @ Pittsburgh 0 1.0 0 0 0.0 1 0 0 0 1 0 0 1 1 0.250 0
    @ San Diego 0 2.0 0 0 0.0 4 0 0 0 2 2 2 2 1 0.250 1
    @ Los Angeles 0 1.1 0 1 0.0 4 2 0 0 2 2 2 2 1 0.333 0
    @ Toronto 0 1.0 0 0 0.0 1 0 0 0 1 0 0 0 0 0.250 0
    @ Miami 0 1.0 0 0 0.0 1 0 0 0 1 0 0 1 1 0.250 0
Riley O’Brien

Riley O’Brien Player Profile  

Team St. Louis Cardinals
Birthdate 2/6/1995 (31)
Status A
HT/WT 6'4", 180 lbs
Draft Info 2017: Rd 8; Pk 4 (TB)
Birthplace Seattle, WA, USA
Position RP
College College of Idaho

Career History

St. Louis Cardinals 2024-Present (3 seasons)
Seattle Mariners 2022-2024 (2 seasons)
Cincinnati Reds 2021-2022 (2 seasons)

Riley O'Brien: More News

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MLB Team Cuts Ties With Former 2.23 ERA Cardinals’ Arm

Cardinals Announce Jordan Walker Injury Decision Before Yankees Game

Cardinals Announce Jordan Walker Injury Decision Before Yankees Game

Cardinals Activate Newly Acquired Reliever, Option Quinn Mathews

Cardinals Activate Newly Acquired Reliever, Option Quinn Mathews

St. Louis Cardinals’ Alec Burleson Decision Gets Attention Before Yankees Game

St. Louis Cardinals’ Alec Burleson Decision Gets Attention Before Yankees Game

Alec Burleson ‘Relieved’ Remaining With Cardinals After Deadline

Alec Burleson ‘Relieved’ Remaining With Cardinals After Deadline

Cardinals Land Diamondbacks’ Pitching Prospect in Lars Nootbaar Deal

Cardinals Land Diamondbacks’ Pitching Prospect in Lars Nootbaar Deal

Cardinals Lefty Hitters In Lineup With Rumors Swirling

Cardinals Lefty Hitters In Lineup With Rumors Swirling

St. Louis Cardinals Trade Dustin May, JoJo Romero to Brewers In Intra-Division Move

St. Louis Cardinals Trade Dustin May, JoJo Romero to Brewers In Intra-Division Move

St. Louis Cardinals Announce Jordan Walker Change Before Yankees Series

St. Louis Cardinals Announce Jordan Walker Change Before Yankees Series

Cardinals’ Lars Nootbaar and Alec Burleson Connected to NL West Contender

Cardinals’ Lars Nootbaar and Alec Burleson Connected to NL West Contender

MLB Insider Tags Cardinals Alec Burleson As Popular Bat

MLB Insider Tags Cardinals Alec Burleson As Popular Bat

Last Look At St. Louis Cardinals Trade Deadline Possibilities

Last Look At St. Louis Cardinals Trade Deadline Possibilities

MLB Trade Rumors: Luis Arraez Trade, Red Sox Add Adley Rutschman, & Reid Detmers Trade Drama

MLB Trade Rumors: Luis Arraez Trade, Red Sox Add Adley Rutschman, & Reid Detmers Trade Drama

2026 MLB Trade Deadline Day Trade Tracker: Live Blog

2026 MLB Trade Deadline Day Trade Tracker: Live Blog

St. Louis Cardinals Announce Jordan Walker Change During Blue Jays Series

St. Louis Cardinals Announce Jordan Walker Change During Blue Jays Series

MLB Trade Rumors: Failed Tarik Skubal Trade Deals, Yankees Add Luis Garcia, Zyhir Hope, & Casey Mize to Cubs

MLB Trade Rumors: Failed Tarik Skubal Trade Deals, Yankees Add Luis Garcia, Zyhir Hope, & Casey Mize to Cubs

St. Louis Cardinals Cut 23-Year-Old Pitcher During Blue Jays Series

St. Louis Cardinals Cut 23-Year-Old Pitcher During Blue Jays Series

MLB Trade Rumors: Red Sox Jarren Duran Gone, Clay Holmes to Yankees & Luis Arraez News

MLB Trade Rumors: Red Sox Jarren Duran Gone, Clay Holmes to Yankees & Luis Arraez News

Cardinals Predicted to Land Mariners Star to Bolster Playoff Hopes

Cardinals Predicted to Land Mariners Star to Bolster Playoff Hopes

MLB Trade Rumors: Mets-Twins A.J. Minter Trade, Zach Neto to Red Sox, & Cubs Eye Robbie Ray

MLB Trade Rumors: Mets-Twins A.J. Minter Trade, Zach Neto to Red Sox, & Cubs Eye Robbie Ray

Cardinals Promote Strikeout Machine for MLB Debut Against Blue Jays

Cardinals Promote Strikeout Machine for MLB Debut Against Blue Jays

Cardinals’ Teenage Phenom is Fast Tracking to St. Louis

Cardinals’ Teenage Phenom is Fast Tracking to St. Louis

St. Louis Cardinals Announce Jordan Walker Decision During Cubs Series

St. Louis Cardinals Announce Jordan Walker Decision During Cubs Series

MLB Trade Rumors: Tarik Skubal to Dodgers and Freddy Peralta & Casey Mize Trades Loom

MLB Trade Rumors: Tarik Skubal to Dodgers and Freddy Peralta & Casey Mize Trades Loom

Yankees Showing Interest in Cardinals’ All-Star Catcher

Yankees Showing Interest in Cardinals’ All-Star Catcher

MLB Insider Reports Cardinals ‘Open To Moving’ All-Star Catcher

MLB Insider Reports Cardinals ‘Open To Moving’ All-Star Catcher

MLB Trade Deadline Rumors: Shohei Ohtani’s Bicep, Skubal to Dodgers, & Yankees-Padres Link

MLB Trade Deadline Rumors: Shohei Ohtani’s Bicep, Skubal to Dodgers, & Yankees-Padres Link

Cardinals’ Demote Promising Starter, Recall Veteran Reliever Before Cubs Game

Cardinals’ Demote Promising Starter, Recall Veteran Reliever Before Cubs Game

MLB Trade Rumors: Blue Jays George Springer to Yankees, Red Sox Eye CJ Abrams, & Dodgers’ Surprise

MLB Trade Rumors: Blue Jays George Springer to Yankees, Red Sox Eye CJ Abrams, & Dodgers’ Surprise

St. Louis Cardinals Predicted to Trade $5.35M Outfielder

St. Louis Cardinals Predicted to Trade $5.35M Outfielder

Riley O'Brien: More News