His fastball is the pitch everything else is built on
Williamson's cutter averages 89.5 mph, and has touched 93.4.
303 thrown, 33.4% of his pitches.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .368 expected average against them, against .231 on his breaking balls.
298 of his fastballs thrown.
When he falls behind, hitters know exactly what is coming
Behind in the count Williamson throws a fastball 77.3% of the time, against 51% when he is ahead.
299 pitches behind in the count, 210 ahead.
One pitch of his moves in a way hitters rarely see
Williamson's 4-seam fastball carries 16.5 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
162 thrown, averaging 92.8 mph.
There is one pitch of his that keeps getting hit
Contact off Williamson's sinker leaves the bat at 94.9 mph, against 76.6 off his curveball.
80 and 80 of them thrown.
One pitch of his runs sideways more than almost anyone's
Williamson's changeup moves 16.5 inches toward the first-base side, the biggest horizontal move in his arsenal.
189 thrown, averaging 85.4 mph.
The gap between his pitches is what makes them work
18.0 mph separates Williamson's sinker from his curveball, 93.1 against 75.1.
80 and 80 of them respectively.
He gets by without much velocity, and it costs him
Williamson averages 86.8 mph across his arsenal, 15th percentile in the league.
518 pitches in 2026. 15th percentile among qualified pitchers in 2026, 457th in MLB.
This is the pitch he goes to when he needs the out
With two strikes Williamson goes to the sweeper: 20.2% of his two-strike pitches, against 6.8% the rest of the time.
233 two-strike pitches in 2026.
He cannot find the zone often enough
Williamson works off the plate, with only 40% of his pitches in the zone, 21st percentile.
518 pitches in 2026. 21st percentile among qualified pitchers in 2026, 422nd in MLB.
He lives on the edges rather than over the middle
15.5% of Williamson's pitches land in the middle third of the zone, well below what most pitchers give away.
141 of 907 located pitches.
He falls behind hitters far too often
Williamson throws a strike on the first pitch 52.2% of the time.
230 plate appearances started in 2026.
He saves one pitch for one side of the plate
Williamson throws the sweeper 28.7% of the time against left-handers and 3.7% against right-handers.
670 pitches to right-handers, 237 to left-handers.
He releases the ball about where everyone else does
Williamson releases the ball 6.0 feet down the mound, a shorter stride than most.
725 tracked pitches in 2026.
How much of the zone he uses depends on the count
Williamson puts 60.9% of his pitches in the zone when he is behind and 41.4% when he is ahead.
299 located pitches behind, 210 ahead.
The angle he throws from is unusual, and hitters notice
Williamson releases the ball from a three-quarters slot, about 58 degrees above horizontal and 1.1 feet to the first-base side of the rubber.
907 tracked release points, averaging 6.4 feet off the ground.
He throws strikes to one type of hitter and not the other
Williamson lands 45% of his fastballs in the zone and only 32.7% of his breaking balls.
298 of his fastballs, 98 of his breaking balls.
His pitches move in ways that fit together
Williamson works with 6 pitches: Cutter, Changeup, 4-Seam Fastball and Sweeper, and a little else. The cutter is 33.4% of everything he throws.
907 classified pitches in 2026.
His velocity drains away as the outing goes on
Williamson's fastball averages 91.3 mph in his first 25 pitches of a start and 90.6 past his 75th.
189 early fastballs, 63 late ones.
One pitch of his spins more than almost anyone's
Williamson's curveball spins at 2,643 rpm, the highest in his arsenal.
80 thrown in 2026.
Too much of the contact against him is loud
41.9% of the contact Williamson gives up is hit hard, 38th percentile.
518 pitches in 2026. 38th percentile among qualified pitchers in 2026, 331st in MLB.
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The numbers behind these live in Pitch Data.
Take me there
His fastball is the pitch everything else is built on
Williamson's cutter averages 89.5 mph, and has touched 93.4.
303 thrown, 33.4% of his pitches.
There is one pitch of his that keeps getting hit
Contact off Williamson's sinker leaves the bat at 94.9 mph, against 76.6 off his curveball.
80 and 80 of them thrown.
The gap between his pitches is what makes them work
18.0 mph separates Williamson's sinker from his curveball, 93.1 against 75.1.
80 and 80 of them respectively.
He saves one pitch for one side of the plate
Williamson throws the sweeper 28.7% of the time against left-handers and 3.7% against right-handers.
670 pitches to right-handers, 237 to left-handers.
His pitches move in ways that fit together
Williamson works with 6 pitches: Cutter, Changeup, 4-Seam Fastball and Sweeper, and a little else. The cutter is 33.4% of everything he throws.
907 classified pitches in 2026.
One pitch of his spins more than almost anyone's
Williamson's curveball spins at 2,643 rpm, the highest in his arsenal.
80 thrown in 2026.
The numbers behind these live in Pitch Data.
Take me there
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .368 expected average against them, against .231 on his breaking balls.
298 of his fastballs thrown.
He throws strikes to one type of hitter and not the other
Williamson lands 45% of his fastballs in the zone and only 32.7% of his breaking balls.
298 of his fastballs, 98 of his breaking balls.
The numbers behind these live in Pitch Data.
Take me there
When he falls behind, hitters know exactly what is coming
Behind in the count Williamson throws a fastball 77.3% of the time, against 51% when he is ahead.
299 pitches behind in the count, 210 ahead.
This is the pitch he goes to when he needs the out
With two strikes Williamson goes to the sweeper: 20.2% of his two-strike pitches, against 6.8% the rest of the time.
233 two-strike pitches in 2026.
He falls behind hitters far too often
Williamson throws a strike on the first pitch 52.2% of the time.
230 plate appearances started in 2026.
How much of the zone he uses depends on the count
Williamson puts 60.9% of his pitches in the zone when he is behind and 41.4% when he is ahead.
299 located pitches behind, 210 ahead.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his moves in a way hitters rarely see
Williamson's 4-seam fastball carries 16.5 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
162 thrown, averaging 92.8 mph.
One pitch of his runs sideways more than almost anyone's
Williamson's changeup moves 16.5 inches toward the first-base side, the biggest horizontal move in his arsenal.
189 thrown, averaging 85.4 mph.
The numbers behind these live in Pitch Data.
Take me there
He gets by without much velocity, and it costs him
Williamson averages 86.8 mph across his arsenal, 15th percentile in the league.
518 pitches in 2026. 15th percentile among qualified pitchers in 2026, 457th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He cannot find the zone often enough
Williamson works off the plate, with only 40% of his pitches in the zone, 21st percentile.
518 pitches in 2026. 21st percentile among qualified pitchers in 2026, 422nd in MLB.
The numbers behind these live in Pitch Data.
Take me there
He lives on the edges rather than over the middle
15.5% of Williamson's pitches land in the middle third of the zone, well below what most pitchers give away.
141 of 907 located pitches.
The numbers behind these live in Pitch Data.
Take me there
He releases the ball about where everyone else does
Williamson releases the ball 6.0 feet down the mound, a shorter stride than most.
725 tracked pitches in 2026.
The angle he throws from is unusual, and hitters notice
Williamson releases the ball from a three-quarters slot, about 58 degrees above horizontal and 1.1 feet to the first-base side of the rubber.
907 tracked release points, averaging 6.4 feet off the ground.
His velocity drains away as the outing goes on
Williamson's fastball averages 91.3 mph in his first 25 pitches of a start and 90.6 past his 75th.
189 early fastballs, 63 late ones.
The numbers behind these live in Spray Chart.
Take me there
Too much of the contact against him is loud
41.9% of the contact Williamson gives up is hit hard, 38th percentile.
518 pitches in 2026. 38th percentile among qualified pitchers in 2026, 331st in MLB.
Reds