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MLB · P
Riley O'Brien
Cardinals
· STL · 2026
#61 · 31 · 6'4" · B/T R/R
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2026
Career
4.08
ERA
3-9
W-L
64
K
1.28
WHIP
64.0
IP
38
SV
66
GP
9.0
K/9
3.83
ERA
6-11
W-L
123
K
1.35
WHIP
122.1
IP
44
SV
118
GP
9.0
K/9
Full career →
Seasons
Season
G
W
L
IP
SO
ERA
WHIP
ST
2026
STL
66
3
9
64.0
64
4.08
1.28
ST
2025
STL
42
3
1
48.0
45
2.06
1.15
ST
2024
STL
8
0
0
8.0
11
11.25
2.63
Full career →
Last 5 games
Game
Result
IP
H
ER
K
WS
vs WSH
Sep 20
W
5-3
1.0
0
0
0
WS
vs WSH
Sep 19
L
5-8
1.0
1
0
2
SF
vs SF
Sep 16
L
5-6
1.0
2
1
0
SF
1.0
1
0
2
1.0
1
2
2
vs SF
Sep 14
W
2-1
CW
vs CWS
Sep 12
L
5-6
Full game log →
2026 NL Central Standings
W
L
PCT
GB
1
MI
Brewers
103
59
.636
—
2
CH
Cubs
89
73
.549
14.0
3
PI
Pirates
82
80
.506
21.0
4
ST
Cardinals
77
85
.475
26.0
5
CI
Reds
75
87
.463
28.0
Full standings →
Riley has no game in the next two weeks, so there are no lines.
Strikeouts history
Outs recorded history
Riley O'Brien props
Latest news
Riley O’Brien tossed a scoreless ninth inning and got the save against the Nationals on Sunday.
NBC Sports / Rotoworld ·
Sep 20, 2026, 5:46 PM EDT
Riley O’Brien tossed a scoreless ninth inning and picked up the save against the Giants on Monday.
NBC Sports / Rotoworld ·
Sep 15, 2026, 12:08 AM EDT
Riley O’Brien allowed two runs, blew the save and took the loss against the White Sox on Saturday.
NBC Sports / Rotoworld ·
Sep 12, 2026, 11:27 PM EDT
All news →
More Cardinals
R/G
4.44
17th
RA/G
4.62
21st
RUN DIFF
-29
18th
HR/G
1.03
24th
H
8.07
21st
BB
3.15
24th
K
8.06
8th
SB
0.62
17th
Team page →