MLB/Players/Riley O'Brien

RILEY O'BRIEN

P · St. Louis Cardinals · 2021–2026 · 121 games

121

CAREER GAMES · REGULAR SEASON

3 seasons

.348

CAREER BATTING AVERAGE

32 hits in 92 at-bats

CAREER HOME RUNS

13 RBI · 0 stolen bases

3.82

CAREER ERA

115.1 innings · 116 strikeouts

6-9

CAREER RECORD

WHIP 1.34

01/Hitting

Season by season
Regular season

Season	Club	G	AB	R	H	2B	3B	HR	RBI	BB	SO	AVG	OBP	SLG	OPS
2024	STL	16	72	20	26	4	2	4	11	16	22	.361	.477	.639	1.116
2022	SEA	2	8	0	2	0	0	0	0	2	2	.250	.400	.250	.650
2021	CIN	2	12	4	4	0	0	4	2	6	4	.333	.556	1.333	1.889
Career	–	20	92	24	32	4	2	8	13	24	28	.348	.483	.696	1.178

02/Pitching

Season by season
Regular season

Season	Club	G	W	L	IP	H	ER	BB	SO	HR	ERA	WHIP
2026	STL	59	3	7	57.0	47	26	24	57	3	4.11	1.25
2025	STL	42	3	1	48.0	33	11	22	45	2	2.06	1.15
2024	STL	8	0	0	8.0	13	10	8	11	2	11.25	2.63
2022	SEA	1	0	0	1.0	1	0	1	1	0	0.00	2.00
2021	CIN	1	0	1	1.1	2	2	3	2	2	13.50	3.75
Career	–	111	6	9	115.1	96	49	58	116	9	3.82	1.34

04/Every pitch

2026 Postseason
Play log from 2015

Season

2026 2025 2024 2022 2021

Season type

Regular season Postseason

Spray chart · 0 batted balls

No batted balls with a location in this window.

Pitch locations · 0 pitches

No pitches with a location in this window.

Pitch mix

No pitch types recorded in this window.

05/Game log

2026
Postseason

No postseason games for Riley O'Brien in 2026.

Regular season and postseason are separate tables and are never summed into one career line; spring training is excluded entirely. Hitting and pitching come from different source rows, so a two-way player has both tables and neither borrows from the other. Innings pitched is summed as outs and converted once: the stored value counts thirds, so “6.1” means six innings and one out, and adding those as decimals understates a career. ERA and WHIP are computed from those totals rather than averaged across seasons. On-base percentage is (H + BB) over (AB + BB), which runs slightly under the official figure because the source rows carry no hit-by-pitch or sacrifice fly. The charts cover 2015 onward only, and the spray chart plots batted balls with a recorded landing spot: a strikeout or a walk has no location and is not a missing dot. Its field is a representative park, not the one the ball was hit in, because a spray chart pooled across a season is hit in thirty different outfields.