InsidethePen | Bullpen Analytics and Usage

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Pitcher Data and Usage Tracking

Spencer Bivens

Spencer Bivens
Throws: R
Primary Role(s): Reliever
Age: 31

San Francisco
Team Record: 67 - 68
Head Coach: Bob Melvin
Pitching Coach: J.P. Martinez

Pitcher Snapshot
Pitcher Impact Rating: 
67.3
IP (last 7 gm): 
3.2
ERA (last 7 gm): 
0.00
Team BP Power Rank: 
#4

Pitcher Season Stats

Cumulative Stats

Season	G	ERA	IP	PA	P/pa	SO/pa	BB/pa	HR/pa	SB/pa	G/AO	AVG	OBP	xWOBA	OPS
2025	44	4.21	66.1	283	3.76	18.0%	7.1%	1.8%	-	1.31	0.264	0.323	0.309	0.730
2025 SpringTr	8	2.70	13.1	59	3.41	22.0%	3.4%	1.7%	-	1.6	0.291	0.339	-	0.757
2025: Home	23	3.79	35.2	150	3.53	16.0%	5.3%	2.0%	-	1.5	0.266	0.309	-	0.712
2025: Away	21	4.70	30.2	133	4.03	20.3%	9.0%	1.5%	-	1.1	0.261	0.338	-	0.750
2025: Vs L	41	-	31.1	137	3.73	16.8%	9.5%	2.2%	-	1.06	0.268	0.338	-	0.761
2025: Vs R	44	-	34.2	146	3.79	19.2%	4.8%	1.4%	-	1.61	0.259	0.308	-	0.701

2025 Pitch Arsenal

Game Logs

Game Date	Opponent	IP	PA	R	H	2B	3B	HR	BB	SO	SB	CS	NP-S	AVG
2025-08-29 (SF)	vs Orioles	1.2	5	0	0	0	0	0	0	0	0	0	11-5	0.26
2025-08-23 (SF)	@ Brewers	2.0 8	7	0	1	0	0	0	0	2	0	0	31-21	0.27
2025-08-21 (SF)	@ Padres	1.0 8	3	0	0	0	0	0	0	1	0	0	10-7	0.27
2025-08-19 (SF)	@ Padres	1.1 4	7	1	3	1	0	0	1	0	0	0	24-15	0.28
2025-08-13 (SF)	vs Padres	2.1 2	9	0	2	0	0	0	1	2	0	0	38-28	0.27
2025-08-10 (SF)	vs Nationals	3.0 6	15	3	5	1	0	0	0	2	0	0	47-33	0.27
2025-08-04 (SF)	@ Pirates	0.2 8	3	0	1	0	0	0	0	1	0	0	16-11	0.27

Advanced Stats

Advanced Stats will be released after the All-Star break

Bullpen Usage & Stats

Last 7 Days

Player	IP	NP-S	ERA	Aug-30	Aug-29	Aug-28	Aug-27	Aug-26	Aug-25	Aug-24
Spencer Bivens	1.2	11-5	0.00		1.2 11-5
Matt Gage	1.1	16-11	0.00		1.0 15-10					0.1 7 1-1
Tristan Beck	1.0	15-10	0.00				1.0 8 15-10
Joey Lucchesi	2.0	30-20	5.41			0.2 9 11-7		1.1 7 19-13
Joel Peguero	3.2	47-32	0.00				2.0 6 25-18			1.2 6 22-14
José Buttó	2.2	26-17	0.00			1.0 8 8-6		0.2 8 7-4		1.0 8 11-7
Ryan Walker	2.1	44-29	0.00			0.1 9 4-2		1.0 9 18-13		1.0 9 22-14
Keaton Winn	2.0	38-26	9.00		2.0 38-26
Randy Rodríguez	0	0-0	9.00
Carson Seymour	1.0	16-8	0.00				1.0 9 16-8
Landen Roupp	0	0-0	0.00

				IP In NP-S	IP In NP-S	IP In NP-S	IP In NP-S	IP In NP-S	IP In NP-S	IP In NP-S

Advanced Pitcher Traits

Games Pitched this Season:

44

Games Started this Season:

0

Pitchers versus LH batters:

Yes

Pitchers versus RH batters:

Yes

Avg Inning when called:

6

Avg Run Diff when called:

2.91

Pitches over 30 pitches:

Yes

Pitches before the 8th:

Yes

Pitches back to back days:

Rarely

Other San Francisco Pitchers

Tristan Beck (R)

Joey Lucchesi (L)

Joel Peguero (R)

José Buttó (R)

Ryan Walker (R)

Keaton Winn (R)

Randy Rodríguez (R)

Carson Seymour (R)

Spencer Bivens (R)

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