Players · P · Pitcher · 2023 regular season

Francisco Pérez

Age: 26
B/T: S/L
Height: 6' 2"
Weight: 227 lb

Born: July 20, 1997 in Loma de Cabrera, Dominican Republic
MLB debut: August 12, 2021

dbWAR: .1
IP: 16.2
ERA: 5.94
FIP: 3.20
K/9: 7.6
FIP−: 74

Francisco Pérez was a relief pitcher for the Oakland Athletics. In 2023 he struck out 14 batters over 16.2 innings across 17 appearances, going 1-2. His ERA of 5.94 was 37.1% higher than the league average of 4.33. Stripping out defence, his 3.20 FIP suggests he pitched better than his ERA shows. He missed bats on 24.7% of swings (11.7% of every pitch he threw), walked 10.8% of the batters he faced and struck out 18.9%. His 0.3 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, 2023 regular season.

FIP3.20

K/97.6

WHIP1.50

WAR.3

WAR by season

Pitching Regular season

Standard and advanced, by season. Regular-season games only.


2023	OAK	17	1	16.2	1	2	17	11	14	8	5.94	3.20	1.50	7.6	4.3	137	74	0.3
2022	WSH	10	0	8.2	0	0	13	7	7	9	7.27	7.61	2.54	7.3	9.3	183	192	-0.3
2021	CLE	4	0	6.2	0	0	6	3	5	3	4.05	3.02	1.35	6.8	4.0	95	71	0.1

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2023. 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	25	21	8	0	3	4	.381	.480	.429	.412	16.0%
vs RHB	49	43	9	0	5	10	.209	.286	.372	.280	20.4%

Pitch sequencing

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

ShowBatter

SliderFour-seamSinkerChangeupCurveball

Select a count to see exactly what Francisco Pérez throws in it.

Pitch arsenal

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

Season


Slider	31.2%	96	81.6	2,467	41.7%	42.5%	18	.111	.222
Four-Seam Fastball	26.6%	82	92.4	2,118	48.8%	21.3%	21	.238	.667
Sinker	21.1%	65	91.4	1,882	44.6%	3.6%	13	—	—
Changeup	18.8%	58	86.8	1,806	41.4%	25.8%	12	—	—

Francisco Pérez'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.

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Francisco Pérez

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.