DataBaseball
2026
Brandon Williamson headshot

Players · W · Pitcher · 2026

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
dbWAR
.4
3 season(s)
IP
49.2
ERA
4.89
FIP
5.74
K/9
6.0
FIP−
137
100 = avg

Brandon Williamson is a starting pitcher for the Cincinnati Reds. In 2026 he struck out 33 batters over 49.2 innings across 11 appearances, 8 of them starts, going 5-4. His ERA of 4.89 is 17.1% higher than the league average of 4.18 — 12th of 20 on his team, and 394th of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 5.74 FIP suggests that his ERA had some help behind him. He missed bats on 24.0% of swings (10.6% of every pitch he threw), walked 12.6% of the batters he faced and struck out 15.3%. His -0.4 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.

FIP5.74
K/96.0
WHIP1.41
WAR-.4

WAR by season

1.00.3-0.4232426

Pitching

Standard and advanced, by season.

Trend
2026CIN11849.2540432733274.895.741.416.04.9117137-0.4
2024CIN4314.10001061253.776.591.057.53.192161-0.3
2023CIN2323117.05501115898394.464.631.287.53.01031071.0

Platoon splits

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

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.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB6154123512.222.295.444.32119.7%
vs RHB1541273152221.244.364.409.34713.6%

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.

Cutter33.1%27589.52,43246.5%20.8%63.222.644
Changeup21.4%17885.31,88438.2%35.7%39.308.812
Four-Seam Fastball17.6%14692.82,19734.2%10.0%25.3201.286
Sweeper10.8%9081.42,62145.6%42.9%28.036.136
Curveball8.7%7275.22,64637.5%5.9%8——
Sinker8.4%7093.12,12142.9%10.8%18.4441.476
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.

Head to head

Put Brandon Williamson beside up to three others.

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Brandon Williamson

Similar players

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

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.