Advanced Bullpen Data + Usage Tracking

Riley O'Brien
Throws: R
Primary Role(s): Reliever
Age: 30

St. Louis
Team Record: 67 - 69
Head Coach: Oliver Marmol
Pitching Coach: Dusty Blake

Pitcher Snapshot
Pitcher Impact Rating: 
79.8
IP (last 7 gm): 
2.2
ERA (last 7 gm): 
3.38
Team BP Power Rank: 
#11

Cumulative Stats

Season	G	ERA	IP	PA	P/pa	SO/pa	BB/pa	HR/pa	SB/pa	G/AO	AVG	OBP	xWOBA	OPS
2025	31	1.69	37.1	152	3.93	23.0%	11.2%	1.3%	-	1.37	0.192	0.303	0.294	0.565
2025 SpringTr	3	0.00	3.0	15	4.27	40.0%	13.3%	0.0%	-	3	0.231	0.333	-	0.564
2025: Home	18	0.82	22.0	85	3.74	21.2%	8.2%	1.2%	-	0.95	0.200	0.282	-	0.549
2025: Away	13	2.93	15.1	67	4.16	25.4%	14.9%	1.5%	-	2.5	0.182	0.328	-	0.583
2025: Vs L	29	-	15.0	62	4.13	33.9%	11.3%	0.0%	-	1.3	0.157	0.290	-	0.486
2025: Vs R	31	-	22.1	90	3.82	15.6%	11.1%	2.2%	-	1.4	0.215	0.311	-	0.615

2025 Pitch Arsenal

Game Logs

Game Date	Opponent	IP	PA	R	H	2B	BB	SO	SB	NP-S	AVG
2025-08-28 (STL)	vs Pirates	1.0 8	4	0	0	0	0	0	1	13-8	0.19
2025-08-25 (STL)	vs Pirates	1.2 8	6	1	1	1	0	1	1	21-12	0.20
2025-08-19 (STL)	@ Marlins	1.0 9	5	0	0	0	2	2	0	18-9	0.20
2025-08-17 (STL)	vs Yankees	1.2 7	6	0	1	0	0	2	0	24-14	0.20
2025-08-13 (STL)	vs Rockies	1.0 8	5	0	2	0	0	0	0	10-7	0.20
2025-08-10 (STL)	vs Cubs	0.2 8	3	0	0	0	1	1	0	13-9	0.19
2025-08-08 (STL)	vs Cubs	1.0 9	3	0	0	0	0	0	0	9-7	0.20

Advanced Stats

Advanced Stats will be released after the All-Star break

Last 7 Days

Player	IP	NP-S	ERA	Aug-29	Aug-28	Aug-27	Aug-26	Aug-25	Aug-24
Riley O'Brien	2.2	34-20	3.38		1.0 8 13-8			1.2 8 21-12
Jorge Alcala	2.0	32-20	3.00	1.0 11-7			1.0 8 21-13
Zack Thompson	0	0-0	3.60
JoJo Romero	1.2	37-19	0.00	0.1 12-4	1.0 9 12-8			0.1 8 13-7
Matthew Liberatore	0	0-0	2.70
Andre Pallante	0	0-0	0.00
Kyle Leahy	3.0	62-35	0.00		2.0 6 38-21			1.0 7 24-14
Ryan Fernandez	3.0	46-30	4.16	1.0 21-13			1.0 9 14-9		1.0 8 11-8
Matt Svanson	4.0	65-43	2.25	1.1 23-18		2.0 8 29-18			0.2 5 13-7
Michael McGreevy	0	0-0	13.52
Gordon Graceffo	3.1	70-46	5.41	1.1 28-19			2.0 6 42-27
Andre Granillo	2.0	36-24	9.00						2.0 6 36-24