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Riley O'Brien

RP · #61 · STL

6' 4" · 180 lbs · College of Idaho

4.08
ERA
1.28
WHIP
64
K
64.0
IP

Recent Games

OpponentResultIPKERH
vs WSH1.0000
vs WSH1.0201
vs SF1.0012
vs SF1.0201
vs CHW1.0221

Splits

SplitERAWHIPKIP
Last 15.401.6005.0
Home3.571.223135.3
Away5.021.493426.9
vs Elite3.101.032017.4
vs Avg7.221.511721.2
vs Weak2.391.422722.6

About Riley O'Brien

Riley O'Brien is a relief pitcher for the St. Louis Cardinals in the MLB, wearing #61. Riley O'Brien is listed at 6' 4", 180 lbs.

Riley O'Brien ranks #52 on Stat Sniper's top 100 MLB players list for the 2026 season (294.0 fantasy points), #51 among pitchers. Among MLB stat leaders, O'Brien is #4 in saves (38).

Through 66 games of the 2026 MLB season, O'Brien has 3 wins, 9 losses, 4.08 ERA and 64.0 innings pitched.

Riley O'Brien 2026 Season Stats

Pitching

66
G
0
GS
3
W
9
L
4.08
ERA
64.0
IP
64
K
29
BB
1.28
WHIP
38
SV
9.0
K/9

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Riley O'Brien FAQ

What team does Riley O'Brien play for?

Riley O'Brien plays for the St. Louis Cardinals in the MLB as a relief pitcher, wearing #61.

What are Riley O'Brien's stats this season?

In the 2026 season, across 66 games, Riley O'Brien has 3 wins, 9 losses, 4.08 ERA, 64.0 innings pitched and 64 strikeouts.

Is Riley O'Brien injured?

Riley O'Brien has no injury designation on the current report.

Where does Riley O'Brien rank among MLB players?

Riley O'Brien ranks #52 on Stat Sniper's top 100 MLB players list for the 2026 season (294.0 fantasy points), #51 among pitchers. In the MLB stat leaders, O'Brien is #4 in saves (38). The top 100 list ranks every player by fantasy points: hitters earn 1 point per run, total base, RBI, walk and stolen base and lose 1 per strikeout; pitchers earn 3 per inning, 1 per strikeout, 2 per win and 5 per save, and lose 1 per hit or walk allowed, 2 per earned run and 2 per loss.

How does Riley O'Brien play at home compared with on the road?

At home (36 games): 3.57 ERA, 1.22 WHIP and 31 K. On the road (31 games): 5.02 ERA, 1.49 WHIP and 34 K.

How does Riley O'Brien perform against top-tier opponents?

Against elite opponents (19 games): 3.10 ERA, 1.03 WHIP and 20 K. Against weak opponents (25 games): 2.39 ERA, 1.42 WHIP and 27 K.