
Riley O'Brien
St. Louis CardinalsP
Age: 31
Bats/Throws: R/R
6'4" / 180
DOB: 2/6/1995
(31 years, 9 months, 7 days)
P
| Season | 2026 | 2027 | Total |
| Team | STL | FGDC | - - - |
| Level | MLB | PROJ | MLB |
| G | 66 | 65 | 118 |
| GS | 0 | 0 | 1 |
| IP | 64.0 | 65.0 | 122.1 |
| K% | 23.2% | 23.1% | 23.0% |
| BB% | 10.5% | 10.1% | 11.8% |
| GB% | 45.8% | 48.9% | |
| ERA | 4.08 | 3.72 | 3.83 |
| FIP | 3.94 | 3.85 | 4.26 |
| WAR | 0.3 | 0.5 | 0.2 |
2026 Pitch
Selection
Selection
SI:58%
SL:41%
RosterResource
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)
News Settings
Article Source
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Fantasy Tools - Player Rater Card
League Settings
12-Team 5x5
Last 7
-
Last 14
-$4.8
Last 30
-$9.4
Season
-$0.0
RP Rank
32
Pitcher Rank
122
Overall Rank
291
Week #
Dollars $
0.0 IP
Rostered %
Started %
W
-$5.2
3
SV
$9.9
38
ERA
-$2.2
4.08
WHIP
-$2.0
1.28
SO
-$4.2
64
Dollars
-$0.0
64 IP
Last 7
Last 14
Last 30
Season

