Players · L · Pitcher · 2026 regular season

Jacob Lopez

Age: 28
B/T: L/L
Height: 6' 4"
Weight: 220 lb
Number: #57

Born: March 11, 1998 in Granada Hills, CA, United States
MLB debut: August 14, 2023
Drafted: 2018, round 26
College: College of the Canyons

Compare with…vs Max Scherzer vs Edward Cabrera vs Brandon Sproat

dbWAR: 1.3
IP: 123.1
ERA: 5.47
FIP: 5.22
K/9: 8.2
FIP−: 125

Jacob Lopez is a starting pitcher for the Athletics. In 2026 he struck out 112 batters over 123.1 innings across 27 appearances, 24 of them starts, going 7-5. His ERA of 5.47 was 30.9% higher than the league average of 4.18 — 10th of 18 on his team, and 442nd of 539 among MLB pitchers with 20+ innings. Stripping out defence, his 5.22 FIP suggests the ERA was no fluke. He missed bats on 24.1% of swings (11.1% of every pitch he threw), walked 10.5% of the batters he faced and struck out 20.3%. 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, 2026 regular season.

FIP5.22

K/98.2

WHIP1.49

WAR.3

WAR by season

Pitching Regular season

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


2026	ATH	27	24	123.1	7	5	0	126	75	112	58	5.47	5.22	1.49	8.2	4.2	131	125	0.3
2025	ATH	21	17	92.2	7	7	0	81	42	113	37	4.08	4.26	1.27	11.0	3.6	98	102	1.0
2024	TB	4	1	10.1	0	0	0	5	6	8	7	5.23	6.75	1.16	7.0	6.1	128	165	-0.2
2023	TB	4	1	12.1	1	0	1	14	6	8	2	4.38	2.93	1.30	5.8	1.5	101	68	0.3

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	147	128	29	3	16	32	.227	.310	.320	.289	21.8%
vs RHB	404	353	97	20	42	80	.275	.355	.501	.372	19.8%

Pitch sequencing

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

ShowBatter

Four-seamSliderCutterChangeupSinkerUnknown

Select a count to see exactly what Jacob Lopez throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	34.3%	770	90.3	2,198	46.2%	20.1%	153	.242	.796
Slider	33.7%	756	76.1	2,390	46.2%	28.6%	177	.220	.665
Cutter	19.8%	443	86.1	2,227	47.4%	22.9%	90	.267	.806
Changeup	8.6%	194	82.4	2,106	33.5%	25.5%	46	.500	1.239
Sinker	2.8%	63	89.7	2,064	36.5%	8.7%	12	—	—
Unknown	0.8%	17	—	—	52.9%	25.0%	3	—	—

Jacob Lopez'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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Similar players

Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.

Edward CabreraCHC

ERA: 5.96
FIP: 5.35
SO: 71
WAR: -0.2

Very close

Ryan JohnsonLAA

ERA: 5.04
FIP: 5.33
SO: 79
WAR: -0.3

Very close

Jake IrvinWSH

ERA: 5.48
FIP: 5.08
SO: 110
WAR: 0.3

Very close

Grayson RodriguezLAA

ERA: 6.02
FIP: 5.01
SO: 85
WAR: 0.2

Very close

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.