Pro Baseball Terminal — MLB projections, standings & analytics

›

Player…·

Riley O'Brien

P · STL

31 yrs

Pitcher

Profile

Position: P
Team: STL
Type: Pitcher
Bats: Right
Throws: Right
Born: 1995-02-06
Age: 31
Country: USA
Height: 6'4"
Weight: 180 lb
Last active: 2026

Career Résumé

W-L6-5

ERA3.61

WHIP1.35

IP90

SO91

SV24

Pitching Projections

2026 · per ~700 BF

Stat	Proj	Range (p10–p90)	vs LY
SO	159	122–189	+1
BB	73	55–91	+2
HR	16	11–23	-1
Hits	144	119–172	+3
ER	70	55–96	+4

Pitching

Regular season

Season	Tm	W	L	ERA	WHIP	G	GS	SV	IP	SO	BB	HR	ER	xERA	Brl%
2026	STL	3	3	3.73	1.21	31	0	18	31.1	32	11	1	13	4.05	4.7%
2025	STL	3	1	2.06	1.15	42	0	6	48.0	45	22	2	11	3.64	3.2%
2024	STL	0	0	11.25	2.63	8	0	0	8.0	11	8	2	10	6.35	7.7%
2022	SEA	0	0	0.00	2.00	1	0	0	1.0	1	1	0	0	2.31	0.0%
2021	CIN	0	1	13.50	3.75	1	1	0	1.1	2	3	2	2	28.84	50.0%

Fielding

Regular season · OAA 2016+

Season	Pos	G	GS	Inn	PO	A	E	DP	FLD%	RF/9	OAA
2026	P	30	0	30.1	6	5	0	0	1.000	3.26	—
2025	P	42	0	48.0	5	8	0	1	1.000	2.44	—
2024	P	8	0	8.0	0	0	0	0	—	0.00	—
2022	P	1	0	1.0	0	0	0	0	—	0.00	—
2021	P	1	1	1.1	0	0	0	0	—	0.00	—

Pitching game log

2026 · last 25

Date		Opp	Res	Dec	IP	H	R	ER	HR	BB	SO	Pit
2026-06-16	vs	SD	W	S	1.0	0	0	0	0	1	0	13
2026-06-13	@	MIN	W	ND	1.0	0	1	1	0	3	1	31
2026-06-07	vs	CIN	W	S	1.0	1	0	0	0	0	1	15
2026-06-06	vs	CIN	W	S	1.0	2	0	0	0	1	1	23
2026-06-03	vs	TEX	W	S	1.0	0	0	0	0	1	0	13
2026-06-02	vs	TEX	L	L	1.0	3	3	3	0	1	2	32
2026-05-29	vs	CHC	W	S	1.0	1	1	1	0	0	0	14
2026-05-23	@	CIN	L	L	1.1	0	1	0	0	1	2	20
2026-05-19	vs	PIT	W	BS	1.0	2	2	2	0	1	0	22
2026-05-15	vs	KC	W	ND	1.0	1	0	0	0	0	0	10
2026-05-14	@	ATH	W	S	1.0	0	0	0	0	0	2	16
2026-05-12	@	ATH	W	S	1.0	0	0	0	0	1	0	13
2026-05-10	@	SD	L	BS	1.0	2	2	2	1	0	3	31
2026-05-07	@	SD	W	S	1.0	0	0	0	0	0	1	10
2026-05-04	vs	MIL	W	S	0.2	0	0	0	0	0	0	3
2026-05-02	vs	LAD	W	S	1.0	4	2	2	0	0	2	26
2026-04-29	@	PIT	W	S	1.0	1	0	0	0	0	1	11
2026-04-25	vs	SEA	L	L	1.0	4	2	2	0	1	1	39
2026-04-21	@	MIA	W	S	1.0	1	0	0	0	0	1	17
2026-04-19	@	HOU	W	W	1.1	1	0	0	0	0	2	19
2026-04-18	@	HOU	W	S	0.2	0	0	0	0	0	1	7
2026-04-15	vs	CLE	W	S	1.0	0	0	0	0	0	2	15
2026-04-14	vs	CLE	W	W	1.0	0	0	0	0	0	1	15
2026-04-10	vs	BOS	W	S	1.0	0	0	0	0	0	1	8
2026-04-08	@	WSH	W	ND	1.0	0	0	0	0	0	0	15

Pitching Profile

2026 · vs 163 qualified

K/9

9.272

BB/9

3.249

HR/9

0.398

ERA

3.7361

WHIP

1.2162

xERA

4.0556

Brl%A

4.7%93

PlayerMedian (50th)percentile vs league

Career Highs

Stat	Best	Year
Wins	3	2026
SO	45	2025
SV	18	2026
ERA	0.00	2022
WHIP	1.15	2025