We're hiring a Senior DevOps Engineer! Come build with Sports Reference. Apply now.

Riley O'Brien

Q: When was Riley O'Brien born?

Riley O'Brien was born on February 6, 1995.

Q: Where was Riley O'Brien born?

Riley O'Brien was born in Seattle, WA .

Q: How tall is Riley O'Brien?

Riley O'Brien is 6-4 (193 cm) tall.

Q: How much does Riley O'Brien weigh?

Riley O'Brien weighs 180 lbs (81 kg).

Q: How many seasons has Riley O'Brien played?

Riley O'Brien is in his 3rd season.

Q: When was Riley O'Brien drafted?

Riley O'Brien was drafted by the Tampa Bay Rays in the 8th round of the 2017 MLB June Amateur Draft from College of Idaho (Caldwell, ID) .

Q: How many strikeouts does Riley O'Brien have?

Riley O'Brien has 11 strikeouts this season and has 14 strikeouts over his career.

Q: How much is Riley O'Brien worth?

Riley O'Brien makes $740,450.00 this year. His current contract terms are 1 yr/$740k (24).

Q: How many teams has Riley O'Brien played for?

Riley O'Brien has played for 3 teams; the Cincinnati Reds, Seattle Mariners and St. Louis Cardinals.

Q: What is Riley O'Brien's Twitter account?

Riley O'Brien is on Twitter at RileyyOBrienn .

Position: Pitcher

Bats: Right • Throws: Right

6-4, 180lb (193cm, 81kg)

Team: St. Louis Cardinals (majors)

Born: February 6, 1995 in Seattle, WA us

Draft: Drafted by the Tampa Bay Rays in the 8th round of the 2017 MLB June Amateur Draft from College of Idaho (Caldwell, ID).

School: College of Idaho (Caldwell, ID)

Debut: September 28, 2021 (Age 26-234d, 22,541st in major league history)
vs. CHW 1.1 IP, 2 H, 2 SO, 3 BB, 2 ER, L

Rookie Status: Still Intact through 2024

2024 Contract Status: Not Updated, 1 yr/$740k (24)

Full Name: Riley Chun-Young O'Brien

Twitter: @RileyyOBrienn

Instagram: @rileyyobrien

View Player Info from the B-R Bullpen

Relatives: Grandson of Johnny O'Brien; Greatnephew of Eddie O'Brien

Become a Stathead & surf this site ad-free.

SUMMARY

2024

Career

WAR

-0.4

-0.5

ERA

11.25

10.45

8.0

10.1

WHIP

2.625

2.710

Last 5 Games

Last 5 Games Table
Date	Tm		Opp	Result	App,Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	BF	Pit	Str	StL	StS	GB	FB	LD	PU	IR	IS	WPA	aLI	cWPA	acLi	RE24
2024-09-14	STL	@	TOR	L 2-7	7-GF(8)	5	2.0	4	2	2	1	3	0	0	11	51	31	8	2	5	2	1	0	0	0	-0.019	0.07	0.00%	0.00	-1.031
2024-09-08	STL		SEA	L 4-10	7-8	1	1.1	1	0	0	2	2	0	0	7	27	12	4	4	1	2	1	1	0	0	0.001	0.03	0.00%	0.00	-0.172
2024-09-06	STL		SEA	L 1-6	9-GF	3	0.2	0	0	0	0	0	0	1	3	8	5	1	1	1	1	0	1	1	0	0.002	0.04	0.00%	0.01	0.536
2024-09-02	STL	@	MIL	L 3-9	6-6	0	0.2	2	4	4	3	1	1	0	7	35	18	6	3	0	3	2	0	0	0	-0.139	0.62	-0.02%	0.14	-3.722
2024-09-01	STL	@	NYY	W 14-7	6-6,BS	1	0.1	2	0	0	0	0	0	0	3	9	5	1	0	2	1	0	0	2	2	-0.221	3.58	-0.03%	0.67	-1.314

for the free Baseball Reference newsletter and get scores, news and notes in your inbox every day.

It's also available for football, basketball and hockey.

Standard Pitching

Standard Pitching
Year	Age	Tm	Lg	W	L	W-L%	ERA	G	GS	GF	CG	SHO	SV	IP	H	R	ER	HR	BB	IBB	SO	HBP	BK	WP	BF	ERA+	FIP	WHIP	H9	HR9	BB9	SO9	SO/W	Awards
2017	22	TBR-min	Rk	1	0	1.000	2.20	11	10	0	0	0	0	41.0	28	10	10	1	17	0	40	4	0	3	159			1.098	6.1	0.2	3.7	8.8	2.35	PRI APPY
2018	23	TBR-min	A,A+	8	4	.667	2.75	25	13	3	1	1	0	88.1	59	32	27	4	42	1	103	2	0	9	357			1.143	6.0	0.4	4.3	10.5	2.45	BWG,POE MIDW,FLOR
2019	24	TBR-min	AA,A+	7	6	.538	3.16	20	17	0	1	1	0	102.2	76	41	36	6	44	0	107	7	0	11	429			1.169	6.7	0.5	3.9	9.4	2.43	MTG,POE SOUL,FLOR
2021	26	CIN-min	AAA	7	7	.500	4.55	23	22	0	0	0	0	112.2	93	59	57	16	55	1	121	10	0	7	490			1.314	7.4	1.3	4.4	9.7	2.20	LOU AAAE
2021	26	CIN	NL	0	1	.000	13.50	1	1	0	0	0	0	1.1	2	2	2	2	3	0	2	0	0	0	9	43	26.42	3.750	13.5	13.5	20.3	13.5	0.67
2022	27	SEA-CIN-min	AAA	1	3	.250	7.03	33	1	4	0	0	0	39.2	45	38	31	5	30	0	47	5	0	4	196			1.891	10.2	1.1	6.8	10.7	1.57	TAC,LOU PCL,IL
2022	27	SEA	AL	0	0		0.00	1	0	1	0	0	0	1.0	1	0	0	0	1	0	1	0	0	0	5		4.11	2.000	9.0	0.0	9.0	9.0	1.00

2023	28	SEA-min	AAA	2	5	.286	2.29	51	3	26	0	0	15	55.0	36	19	14	2	31	1	86	5	0	3	228			1.218	5.9	0.3	5.1	14.1	2.77	TAC PCL
2024	29	STL-min	AAA	1	0	1.000	1.35	14	0	1	0	0	1	13.1	8	3	2	0	5	0	9	0	0	1	52			0.975	5.4	0.0	3.4	6.1	1.80	MEM IL
2024	29	STL	NL	0	0		11.25	8	0	4	0	0	0	8.0	13	10	10	2	8	0	11	1	0	1	46	39	7.04	2.625	14.6	2.3	9.0	12.4	1.38
3 Yrs				0	1	.000	10.45	10	1	5	0	0	0	10.1	16	12	12	4	12	0	14	1	0	1	60	44	9.26	2.710	13.9	3.5	10.5	12.2	1.17
162 Game Avg.				0	6	.000	10.45	62	6	31	0	0	0	64	99	74	74	25	74	0	87	6	0	6	371	44	9.26	2.710	13.9	3.5	10.5	12.2	1.17

STL (1 yr)				0	0		11.25	8	0	4	0	0	0	8.0	13	10	10	2	8	0	11	1	0	1	46	39	7.04	2.625	14.6	2.3	9.0	12.4	1.38
CIN (1 yr)				0	1	.000	13.50	1	1	0	0	0	0	1.1	2	2	2	2	3	0	2	0	0	0	9	43	26.42	3.750	13.5	13.5	20.3	13.5	0.67
SEA (1 yr)				0	0		0.00	1	0	1	0	0	0	1.0	1	0	0	0	1	0	1	0	0	0	5		4.11	2.000	9.0	0.0	9.0	9.0	1.00

NL (2 yrs)				0	1	.000	11.57	9	1	4	0	0	0	9.1	15	12	12	4	11	0	13	1	0	1	55	40	9.81	2.786	14.5	3.9	10.6	12.5	1.18
AL (1 yr)				0	0		0.00	1	0	1	0	0	0	1.0	1	0	0	0	1	0	1	0	0	0	5		4.11	2.000	9.0	0.0	9.0	9.0	1.00

Player Value--Pitching

WAR Explained (v2.2): 8+ MVP, 5+ A-S, 2+ Starter, 0-2 Sub, < 0 Repl

Advanced Pitching

See More Advanced Pitching

Become a Stathead & surf this site ad-free.

Player News

Standard Fielding

Appearances

Transactions

Salaries

Salaries may not be complete (especially pre-1985) and may not include some earned bonuses

Frequently Asked Questions

How old is Riley O'Brien?

Riley O'Brien is 29 years old.

When was Riley O'Brien born?

Riley O'Brien was born on February 6, 1995.

Where was Riley O'Brien born?

Riley O'Brien was born in Seattle, WA.

How tall is Riley O'Brien?

Riley O'Brien is 6-4 (193 cm) tall.

How much does Riley O'Brien weigh?

Riley O'Brien weighs 180 lbs (81 kg).

How many seasons has Riley O'Brien played?

Riley O'Brien is in his 3rd season.

When was Riley O'Brien drafted?

Riley O'Brien was drafted by the Tampa Bay Rays in the 8th round of the 2017 MLB June Amateur Draft from College of Idaho (Caldwell, ID).

What position does Riley O'Brien play?

Riley O'Brien is a Pitcher.

How many strikeouts does Riley O'Brien have?

Riley O'Brien has 11 strikeouts this season and has 14 strikeouts over his career.

How much is Riley O'Brien worth?

Riley O'Brien makes $740,450.00 this year. His current contract terms are 1 yr/$740k (24).

How many teams has Riley O'Brien played for?

Riley O'Brien has played for 3 teams; the Cincinnati Reds, Seattle Mariners and St. Louis Cardinals.

What is Riley O'Brien's Twitter account?

Riley O'Brien is on Twitter at RileyyOBrienn.

What is Riley O'Brien's Instagram account?

Riley O'Brien is on Instagram at rileyyobrien.

Other Resources & Links

More O'Brien Pages

Riley O'Brien Overview

Amateur, College & Minor Lg Stats

Pitching Splits

Pitching Game Logs

Fielding Game Logs

Pitching Finders & Advanced Stats

Fielding Finders & Advanced Stats

Advanced Stats

More Riley O'Brien Pages at Baseball Reference

Riley O'Brien page at the Bullpen Wiki