Players · P · Pitcher · 2026

Joel Peguero

San Francisco Giants National League West

Age: 29
B/T: R/R
Height: 5' 10"
Weight: 195 lb
Number: #63

Born: May 5, 1997 in Santo Domingo, Dominican Republic
MLB debut: August 21, 2025

dbWAR: .3
IP: 11.1
ERA: 2.38
FIP: 3.81
K/9: 4.0
FIP−: 91

Joel Peguero is a relief pitcher for the San Francisco Giants. In 2026 he struck out 5 batters over 11.1 innings across 11 appearances, going 0-0. His ERA of 2.38 is 43.0% lower than the league average of 4.18. Stripping out defence, his 3.81 FIP suggests that his ERA had some help behind him. He missed bats on 18.1% of swings (10.1% of every pitch he threw), walked 8.3% of the batters he faced and struck out 10.4%. 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.

FIP3.81

K/94.0

WHIP1.24

WAR.1

WAR by season

Pitching

Standard and advanced, by season.

																				Trend
2026	SF	11	0	11.1	0	0	0	10	3	5	4	2.38	3.81	1.24	4.0	3.2	57	91	0.1
2025	SF	17	0	22.1	3	1	0	15	6	17	8	2.42	3.85	1.03	6.9	3.2	58	93	0.2

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	20	19	3	0	1	1	.158	.200	.263	.206	5.0%
vs RHB	28	23	7	0	3	4	.304	.429	.348	.367	14.3%

Pitch sequencing

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

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Four-seamSinkerSlider

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Pitch arsenal

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

Season


Four-Seam Fastball	43.2%	73	100.0	2,231	58.9%	23.3%	15	.067	.396
Sinker	33.7%	57	99.1	2,285	36.8%	9.7%	18	.278	.594
Slider	23.1%	39	93.2	2,545	35.9%	20.0%	10	—	—

Joel Peguero'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.