Players · M · Pitcher · 2026

Ron Marinaccio

Age: 31
B/T: R/R
Height: 6' 2"
Weight: 205 lb
Number: #97

Born: July 1, 1995 in Toms River, NJ, United States
MLB debut: April 9, 2022
Drafted: 2017, round 19
College: Delaware

dbWAR: .3
IP: 57.2
ERA: 6.09
FIP: 5.69
K/9: 7.5
FIP−: 136

Ron Marinaccio is a relief pitcher for the San Diego Padres. In 2026 he struck out 48 batters over 57.2 innings across 41 appearances, going 1-0. His ERA of 6.09 is 45.7% higher than the league average of 4.18 — the second worst on his team, and 491st of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 5.69 FIP suggests he pitched better than his ERA shows. He missed bats on 25.3% of swings (11.9% of every pitch he threw), walked 10.4% of the batters he faced and struck out 18.5%. His -0.7 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.

FIP5.69

K/97.5

WHIP1.53

WAR-.7

WAR by season

Pitching

Standard and advanced, by season.


2026	SD/CIN/PIT	41	57.2	1	0	0	61	39	48	27	6.09	5.69	1.53	7.5	4.2	146	136	-0.7
2025	SD	7	10.2	0	0	0	6	1	12	4	0.84	2.01	0.94	10.1	3.4	20	48	0.3
2024	NYY	16	23.1	1	0	0	18	10	25	10	3.86	4.92	1.20	9.6	3.9	95	121	-0.1
2023	NYY	45	47.1	4	5	2	35	21	56	27	3.99	4.69	1.31	10.6	5.1	92	108	0.1
2022	NYY	40	44.0	1	0	0	22	10	56	24	2.05	3.20	1.05	11.5	4.9	52	81	0.7

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	135	113	30	3	20	24	.265	.385	.425	.367	17.8%
vs RHB	126	114	31	8	7	24	.272	.341	.535	.379	19.0%

Pitch sequencing

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

ShowBatter

Four-seamChangeupCutterSweeper

Select a count to see exactly what Ron Marinaccio throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	42.6%	444	93.7	2,180	49.8%	26.2%	97	.278	.886
Changeup	27.3%	284	81.9	2,219	31.3%	25.2%	62	.242	.754
Cutter	20.6%	215	86.5	2,202	45.6%	24.0%	46	.261	.793
Sweeper	9.5%	99	82.0	2,418	41.4%	23.4%	22	.318	1.000

Ron Marinaccio'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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Similar players

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

Jimmy HergetCOL

ERA: 5.70
FIP: 5.39
SO: 47
WAR: -0.3

Very close

Robby AhlstromTEX

ERA: 6.08
FIP: 5.18
SO: 34
WAR: -0.2

Very close

Alex LangeKC

ERA: 6.18
FIP: 5.40
SO: 60
WAR: -0.4

Very close

Dennis SantanaPIT

ERA: 5.43
FIP: 5.17
SO: 49
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.