Players · W · Pitcher · 2026 regular season

Brandon Williamson

Age: 28
B/T: R/L
Height: 6' 6"
Weight: 210 lb
Number: #55

Born: April 2, 1998 in Fairmont, MN, United States
MLB debut: May 16, 2023
Drafted: 2018, round 36
College: Texas Christian
High school: Martin County West

Compare with…vs Sam Aldegheri vs JR Ritchie vs Spencer Arrighetti

dbWAR: .3
IP: 52.2
ERA: 5.30
FIP: 5.89
K/9: 6.2
FIP−: 141

Brandon Williamson is a starting pitcher for the Cincinnati Reds. In 2026 he struck out 36 batters over 52.2 innings across 12 appearances, 9 of them starts, going 5-5. His ERA of 5.30 was 26.7% higher than the league average of 4.18 — 14th of 20 on his team, and 430th of 539 among MLB pitchers with 20+ innings. Stripping out defence, his 5.89 FIP suggests that his ERA had some help behind him. He missed bats on 23.5% of swings (10.3% of every pitch he threw), walked 13.0% of the batters he faced and struck out 15.6%. His -0.5 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.

FIP5.89

K/96.2

WHIP1.46

WAR-.5

WAR by season

Pitching Regular season

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


2026	CIN	12	9	52.2	5	5	47	31	36	30	5.30	5.89	1.46	6.2	5.1	127	141	-0.5
2024	CIN	4	3	14.1	0	0	10	6	12	5	3.77	6.59	1.05	7.5	3.1	92	161	-0.3
2023	CIN	23	23	117.0	5	5	111	58	98	39	4.46	4.63	1.28	7.5	3.0	103	107	1.0

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	64	57	14	3	5	12	.246	.313	.456	.334	18.8%
vs RHB	167	136	33	6	25	24	.243	.365	.426	.352	14.4%

Pitch sequencing

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

ShowBatter

CutterChangeupFour-seamSweeperCurveballSinker

Select a count to see exactly what Brandon Williamson throws in it.

Pitch arsenal

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

Season


Cutter	33.1%	300	89.5	2,432	47.0%	19.7%	68	.250	.729
Changeup	20.8%	189	85.4	1,870	37.0%	36.0%	39	.308	.812
Four-Seam Fastball	18.2%	165	92.8	2,218	35.8%	12.5%	26	.308	1.267
Sweeper	10.7%	97	81.4	2,624	45.4%	40.7%	31	.065	.218
Curveball	8.8%	80	75.1	2,643	36.3%	5.6%	9	—	—
Sinker	8.4%	76	93.1	2,135	42.1%	10.3%	20	.400	1.335

Brandon Williamson'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.

Compare Brandon Williamson with…

Side by side with up to three others.

Compare with… add up to 3 more players

Brandon Williamson

Or read one already written — Brandon Williamson against:

Similar players

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

Sam AldegheriLAA

ERA: 5.08
FIP: 5.33
SO: 22
WAR: -0.1

Very close

JR RitchieATL

ERA: 4.91
FIP: 5.56
SO: 68
WAR: -0.4

Spencer ArrighettiHOU

ERA: 4.96
FIP: 5.44
SO: 106
WAR: -0.5

Merrill KellyAZ

ERA: 4.94
FIP: 5.33
SO: 113
WAR: -0.2

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.