Major League Baseball
PLAYERS
Riley O'Brien
#55 - St. Louis Cardinals
Profile
Position Starter
Height 6'4"
Weight 180 lbs
Birthdate February 6, 1995
Birthplace Seattle, Washington
College Idaho
Bats Right
Throws Right
Key Statistics
IP 27.0
W/L 0-0
SV 0
ERA 1.67
K 29
BB 13
OBP .315
Errors 0
Last 10
Date vs Res Score IP H R ER K BB HR
7/30/25 MIA 0-2 1.1 0 0 0 1 0 0
7/26/25 SD 1-3 1.0 0 0 0 1 0 0
7/24/25 SD H 9-7 0.1 1 0 0 1 1 0
7/22/25 @ COL 4-8 1.0 1 1 0 1 2 0
7/20/25 @ AZ 3-5 1.0 0 0 0 2 0 0
7/13/25 ATL H 5-4 1.2 1 0 0 2 1 0
7/11/25 ATL 5-6 2.0 2 0 0 4 1 0
7/6/25 @ CHC 0-11 2.0 2 0 0 3 0 0
7/2/25 @ PIT 0-5 0.2 2 1 1 1 1 0
6/29/25 @ CLE 7-0 1.0 0 0 0 3 2 0
Pitching Statistics
Year Team W L ERA IP H R ER BB K HR
2021 CIN 0 1 13.50 1.1 2 2 2 3 2 2
2022 SEA 0 0 .00 1.0 1 0 0 1 1 0
2024 STL 0 0 11.25 8.0 13 10 10 8 11 2
2025 STL 0 0 1.67 27.0 20 6 5 13 29 2
Pitching Splits
  Overall Last 3 Away Home Day Night
W/L
ERA
IP
Hits
Runs
ER
K
BB
HR		 0-0
1.67
27.0
20
6
5
29
13
2		 0-0
0.00
0.0
0
0
0
0
0
0		 0-0
3.00
12.0
9
5
4
15
7
1		 0-0
0.60
15.0
11
1
1
14
6
1		 0-0
3.00
12.0
7
4
4
14
7
1		 0-0
0.60
15.0
13
2
1
15
6
1
OBP
WHIP
GB:FB
SB
CS
SB %
QS %		 .315
1.22
3.00
0
1
0.0
0.0		 .000
0.00
0
0
0
0
0.0		 .340
1.33
2.17
0
0
0
0.0		 .293
1.13
4.67
0
1
0.0
0.0		 .306
1.17
13.00
0
1
0.0
0.0		 .323
1.27
1.75
0
0
0
0.0
TW/TL
AF
AA
Total
Over
Under		 9-13
4.09
4.55
8.64
11
10		 0-0
0.00
0.00
0.00
0
0		 3-7
3.80
5.20
9.00
4
5		 6-6
4.33
4.00
8.33
7
5		 5-5
3.80
4.70
8.50
5
5		 4-8
4.33
4.42
8.75
6
5
Season Injury Log
Date On Date Off Injury Status
No injuries to report.