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Riley O'Brien

Riley O'Brien

St. Louis Cardinals
P
Age: 31
Bats/Throws: R/R
6'4" / 180
DOB: 2/6/1995
(31 years, 8 months, 14 days)
P
Player Dashboard:
Season20262026Total
TeamFGDCSTL- - -
LevelPROJMLBMLB
G6366118
GS001
IP63.064.0122.1
K%24.0%23.2%23.0%
BB%10.5%10.5%11.8%
GB%45.8%48.9%
ERA3.714.083.83
FIP3.833.944.26
WAR0.40.30.2
2026 Pitch
Selection
SI:58%
SL:41%
RosterResource
Current Role:Bullpen: Closer (RR)
How Acquired:Purchased (SEA) Nov'23
Draft:2017, Rd: 8, Pick: 4, Ovr: 229
Draft Team:Tampa Bay Rays
Signing Bonus:$7,500
School:College of Idaho
Contract1 yr, $795k (2026) (RR)
Pre-Arbitration
AAV: $795k
Service Time
1.129
MiLB Options
0
Free Agent
2031
Arb Eligible
2028
News
Rotowire: O'Brien said recently that he wants to put on "as much muscle as I can" this offseason in order to help his body absorb the toll of the 2027 season, Daniel Guerrero of the St. Louis Post-Dispatch reports. (10/7/2026)
RG
10/9/26
RG
10/6/26
RG
9/26/26
RG
9/14/26
FG
5/23/26
FG
5/6/26
FG
4/23/26
RG
4/2/26
RG
2/18/26
RG
9/21/25
RG
8/17/25
RG
8/15/25
RG
8/10/25
RG
8/3/25
FG
11/21/23
FG
5/13/22
FG
4/11/22
FG
9/8/21
FG
12/23/20
FG
9/1/20
FG
3/18/20
FG
7/26/19
FG
2/8/19
FG
1/30/19
FG
1/22/19
More Articles
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FG
RG
Show
Season20262026Total
TeamFGDCSTL- - -
LevelPROJMLBMLB
G6366118
GS001
IP63.064.0122.1
K%24.0%23.2%23.0%
BB%10.5%10.5%11.8%
GB%45.8%48.9%
ERA3.714.083.83
FIP3.833.944.26
WAR0.40.30.2
2026 Pitch
Selection
SI:58%
SL:41%
RosterResource
Current Role:Bullpen: Closer (RR)
How Acquired:Purchased (SEA) Nov'23
Draft:2017, Rd: 8, Pick: 4, Ovr: 229
Draft Team:Tampa Bay Rays
Signing Bonus:$7,500
School:College of Idaho
Contract1 yr, $795k (2026) (RR)
Pre-Arbitration
AAV: $795k
Service Time
1.129
MiLB Options
0
Free Agent
2031
Arb Eligible
2028
News
Rotowire: O'Brien said recently that he wants to put on "as much muscle as I can" this offseason in order to help his body absorb the toll of the 2027 season, Daniel Guerrero of the St. Louis Post-Dispatch reports. (10/7/2026)
RG
10/9/26
RG
10/6/26
RG
9/26/26
RG
9/14/26
FG
5/23/26
FG
5/6/26
FG
4/23/26
RG
4/2/26
RG
2/18/26
RG
9/21/25
RG
8/17/25
RG
8/15/25
RG
8/10/25
RG
8/3/25
FG
11/21/23
FG
5/13/22
FG
4/11/22
FG
9/8/21
FG
12/23/20
FG
9/1/20
FG
3/18/20
FG
7/26/19
FG
2/8/19
FG
1/30/19
FG
1/22/19
More Articles
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All
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RG
Show
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Comparison

Rate:
ERA
  • ERA
  • K/9
  • BB/9
  • K/BB
  • HR/9
  • AVG
  • WHIP
  • BABIP
  • LOB%
  • FIP
    • Counting:
    Select
  • W
  • L
  • CG
  • ShO
  • SV
  • H
  • HR
  • SO
  • BB
  • HBP

    • ERA by Season

    Riley O'BrienAverage
    Season20202021202220232024202520262027ERA2.004.006.008.0010.0012.0014.00

    ERA by Age

    Riley O'BrienAverage
    Age2526272829303132ERA2.004.006.008.0010.0012.0014.00