Players · B · Pitcher · 2026

Spencer Bivens

San Francisco Giants National League West

Age: 32
B/T: R/R
Height: 6' 4"
Weight: 220 lb
Number: #76

Born: June 28, 1994 in Virginia Beach, VA, United States
MLB debut: June 16, 2024

dbWAR: .9
IP: 7.0
ERA: 10.29
FIP: 3.25
K/9: 15.4
FIP−: 78

Spencer Bivens is a relief pitcher for the San Francisco Giants. In 2026 he struck out 12 batters over 7.0 innings across 5 appearances, going 0-0. His ERA of 10.29 is 146.2% higher than the league average of 4.18. Stripping out defence, his 3.25 FIP suggests he pitched better than his ERA shows. He missed bats on 25.0% of swings (11.3% of every pitch he threw), walked 10.8% of the batters he faced and struck out 32.4%. His 0.1 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.

League context

Percentile among qualified pitchers, 2026.

FIP3.25

K/915.4

WHIP2.29

WAR.1

WAR by season

Pitching

Standard and advanced, by season.


2026	SF/KC	5	0	7.0	0	0	0	12	8	12	4	10.29	3.25	2.29	15.4	5.1	246	78	0.1
2025	SF	54	0	81.0	4	3	3	83	36	61	25	4.00	3.70	1.33	6.8	2.8	96	89	0.9
2024	SF	27	2	48.2	3	1	1	47	17	37	11	3.14	4.79	1.19	6.8	2.0	77	117	-0.1

Platoon splits

How left- and right-handed hitters fare against him.

Season

Opponent batting by the side the hitter bats from, 2026. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
Split	PA	AB	H	HR	BB	SO	AVG	OBP	SLG	wOBA	K%
vs LHB	16	13	7	1	2	4	.538	.563	.769	.552	25.0%
vs RHB	21	19	5	0	2	8	.263	.333	.316	.299	38.1%

Pitch sequencing

What Spencer Bivens throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter

SinkerSweeperFour-seamChangeupCutter

Select a count to see exactly what Spencer Bivens throws in it.

Pitch arsenal

What he throws, how hard, how often it misses, and what hitters do with it.

Season


Sinker	36.5%	58	95.1	1,969	60.3%	19.2%	10	—	—
Sweeper	25.8%	41	81.6	2,357	51.2%	35.7%	5	—	—
Four-Seam Fastball	21.4%	34	94.5	1,957	58.8%	33.3%	11	—	—
Changeup	9.4%	15	87.4	1,693	26.7%	0.0%	3	—	—

Spencer Bivens's arsenal by usage. Velocity is average release speed in mph, spin in rpm, and whiff rate is misses per swing — the cleanest single measure of whether a pitch beats hitters. BAA and OPS are what hitters did against each pitch, credited to the one that ended the plate appearance, and are left blank under 15 at-bats.

Head to head

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How these are computed

wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.