Riley O'Brien 2025 season stats

Riley O'Brien played 42 games for the St. Louis Cardinals in the 2025 MLB regular season, with 3 wins, a 2.06 ERA and 45 strikeouts.

All Riley O'Brien seasonsSt. Louis Cardinals

2025 regular season

GP
42
R
13
H
33
K
45
L
1
W
3
BB
22
ER
11
GS
0
IP
48.0
SV
6
W%
0.8

2025 splits

Totals, from the 42 regular-season games in the log.

Riley O'Brien, 2025 splits
GP: Games the player appeared in, however briefly.IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.H: Times the batter reached base by hitting the ball, without help from an error.R: Runs — scored by the batter, or allowed by the pitcher.ER: Earned runs allowed — runs that scored without help from an error.BB: Times the batter reached first base on four balls.K: Batters this pitcher struck out.HR: Home runs hit.ERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent.
All games4248.0331311224522.06
Home2327.1162282110.66
Away1920.217119142413.92
Wins2222.2822102000.79
Losses2025.125119122523.20
April21.02001000.00
May11.213312116.20
June1013.181151110.68
July911.092161600.82
August910.15224601.74
September1110.285451003.38

What the columns mean: IP · H · R · BB · K · HR · ERA

By opponent

Riley O'Brien, 2025, by opponent
GP: Games the player appeared in, however briefly.IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.H: Times the batter reached base by hitting the ball, without help from an error.R: Runs — scored by the batter, or allowed by the pitcher.ER: Earned runs allowed — runs that scored without help from an error.BB: Times the batter reached first base on four balls.K: Batters this pitcher struck out.HR: Home runs hit.ERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent.
vs ARI11.00000200.00
vs ATL23.23002600.00
vs CHC66.24002700.00
vs CHW23.01000200.00
vs CIN44.03333516.75
vs CLE11.00002300.00
vs COL22.03102100.00
vs KC11.21000100.00
vs LAD22.11111003.86
vs MIA22.10002300.00
vs MIL64.22332405.79
vs NYY11.21000200.00
vs PIT33.13221205.40
vs SD21.11001200.00
vs SEA12.02102200.00
vs SF43.13111202.70
vs TOR24.05111112.25

What the columns mean: IP · H · R · BB · K · HR · ERA

2025 games

Riley O'Brien, last 15 games, 2025 regular season
IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.H: Times the batter reached base by hitting the ball, without help from an error.R: Runs — scored by the batter, or allowed by the pitcher.ER: Earned runs allowed — runs that scored without help from an error.BB: Times the batter reached first base on four balls.K: Batters this pitcher struck out.HR: Home runs hit.
Sep 28, 2025@ CHCL 2-01.0100020
Sep 24, 2025@ SFL 4-31.0211100
Sep 23, 2025@ SFW 9-80.1000010
Sep 21, 2025vs MILW 5-11.0000000
Sep 20, 2025vs MILL 3-2 F/101.1000110
Sep 16, 2025vs CINW 3-01.0000010
Sep 14, 2025@ MILW 3-21.0000120
Sep 13, 2025@ MILL 9-8 F/100.0233000
Sep 10, 2025@ SEAL 4-2 F/132.0210220
Sep 7, 2025vs SFW 4-31.0100000
Sep 6, 2025vs SFW 3-21.0000010
Aug 28, 2025vs PITW 4-11.0000000
Aug 25, 2025vs PITW 7-61.2111010
Aug 19, 2025@ MIAW 7-41.0000220
Aug 17, 2025vs NYYL 8-41.2100020

What the columns mean: IP · H · R · BB · K · HR

All 42 gamesOnly the last 15 games
Riley O'Brien, game by game, 2025 regular season
IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.H: Times the batter reached base by hitting the ball, without help from an error.R: Runs — scored by the batter, or allowed by the pitcher.ER: Earned runs allowed — runs that scored without help from an error.BB: Times the batter reached first base on four balls.K: Batters this pitcher struck out.HR: Home runs hit.
Sep 28, 2025@ CHCL 2-01.0100020
Sep 24, 2025@ SFL 4-31.0211100
Sep 23, 2025@ SFW 9-80.1000010
Sep 21, 2025vs MILW 5-11.0000000
Sep 20, 2025vs MILL 3-2 F/101.1000110
Sep 16, 2025vs CINW 3-01.0000010
Sep 14, 2025@ MILW 3-21.0000120
Sep 13, 2025@ MILL 9-8 F/100.0233000
Sep 10, 2025@ SEAL 4-2 F/132.0210220
Sep 7, 2025vs SFW 4-31.0100000
Sep 6, 2025vs SFW 3-21.0000010
Aug 28, 2025vs PITW 4-11.0000000
Aug 25, 2025vs PITW 7-61.2111010
Aug 19, 2025@ MIAW 7-41.0000220
Aug 17, 2025vs NYYL 8-41.2100020
Aug 13, 2025vs COLL 6-51.0200000
Aug 10, 2025vs CHCW 3-20.2000110
Aug 8, 2025vs CHCW 5-01.0000000
Aug 6, 2025@ LADW 5-31.1000100
Aug 4, 2025@ LADW 3-21.0111000
Jul 30, 2025vs MIAL 2-01.1000010
Jul 26, 2025vs SDL 3-11.0000010
Jul 24, 2025vs SDW 9-70.1100110
Jul 22, 2025@ COLL 8-41.0110210
Jul 20, 2025@ ARIL 5-31.0000020
Jul 13, 2025vs ATLW 5-41.2100120
Jul 11, 2025vs ATLL 6-52.0200140
Jul 6, 2025@ CHCL 11-02.0200030
Jul 2, 2025@ PITL 5-00.2211110
Jun 29, 2025@ CLEW 7-01.0000230
Jun 26, 2025vs CHCL 3-01.0000110
Jun 23, 2025vs CHCW 8-21.0100000
Jun 20, 2025vs CINW 6-10.2000120
Jun 19, 2025@ CHWW 8-6 F/101.0000010
Jun 17, 2025@ CHWW 12-22.0100010
Jun 13, 2025@ MILL 3-21.0000010
Jun 11, 2025vs TORL 5-22.0200110
Jun 9, 2025vs TORL 5-4 F/102.0311001
Jun 5, 2025vs KCW 6-5 F/101.2100010
May 1, 2025@ CINL 9-11.2133121
Apr 28, 2025@ CINL 3-10.2200100
Apr 26, 2025vs MILW 6-50.1000000

What the columns mean: IP · H · R · BB · K · HR

Answered about Riley O'Brien in 2025

Source: ESPN public MLB data, 2025 season.