One type of hitter does all the damage against him
Hitters do their damage on his offspeed pitches: a .418 expected average against them, against .275 on his breaking balls.
98 of his offspeed pitches thrown.
He pitches around the zone once runners are on
Walker throws 54.6% of his pitches in the zone with a runner in scoring position and 37.6% with the bases empty.
97 pitches with a runner in scoring position, 327 with the bases empty.
One pitch of his moves in a way hitters rarely see
Walker's 4-seam fastball carries 16.7 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
42 thrown, averaging 91.9 mph.
There is one pitch of his that keeps getting hit
Contact off Walker's 4-seam fastball leaves the bat at 96.5 mph, against 79.5 off his curveball.
42 and 53 of them thrown.
The gap between his pitches is what makes them work
17.5 mph separates Walker's 4-seam fastball from his curveball, 91.9 against 74.4.
42 and 53 of them respectively.
He gets by without much velocity, and it costs him
Walker averages 86.1 mph across his arsenal, 10th percentile in the league.
424 pitches in 2026. 10th percentile among qualified pitchers in 2026, 481st in MLB.
How much of the zone he uses depends on the count
Walker puts 58.9% of his pitches in the zone when he is behind and 34.1% when he is ahead.
112 located pitches behind, 126 ahead.
One pitch of his runs sideways more than almost anyone's
Walker's sinker moves 15.3 inches toward the third-base side, the biggest horizontal move in his arsenal.
96 thrown, averaging 91.8 mph.
The contact he allows is the kind that finds grass
The quality of contact against Walker projects a .373 average, 11th percentile.
424 pitches in 2026. 11th percentile among qualified pitchers in 2026, 477th in MLB.
When he falls behind, hitters know exactly what is coming
Behind in the count Walker throws a fastball 60.7% of the time, against 44.4% when he is ahead.
112 pitches behind in the count, 126 ahead.
His ball is straighter than it should be
Walker's stuff spins at 2,033 rpm, 12th percentile in the league.
424 pitches in 2026. 12th percentile among qualified pitchers in 2026, 473rd in MLB.
He saves one pitch for one side of the plate
Walker throws the splitter 32.7% of the time against left-handers and 7.9% against right-handers.
164 pitches to right-handers, 260 to left-handers.
He works one part of the zone far more than the rest
Walker lives at the bottom of the zone: his average pitch crosses at 2.27 feet, against a zone that runs 1.5 to 3.5.
424 located pitches in 2026.
He releases the ball about where everyone else does
Walker releases the ball 6.0 feet down the mound, a shorter stride than most.
299 tracked pitches in 2026.
His pitches move in ways that fit together
Walker works with 6 pitches: Splitter, Sinker, Cutter and Curveball, and a little else. The splitter is 23.1% of everything he throws.
424 classified pitches in 2026.
He cannot find the zone often enough
Walker works off the plate, with only 41.5% of his pitches in the zone, 33rd percentile.
424 pitches in 2026. 33rd percentile among qualified pitchers in 2026, 358th in MLB.
He lives on the edges rather than over the middle
17% of Walker's pitches land in the middle third of the zone, well below what most pitchers give away.
72 of 424 located pitches.
His fastball is the pitch everything else is built on
Walker's sinker averages 91.8 mph, and has touched 94.0.
96 thrown, 22.6% of his pitches.
This is the pitch he goes to when he needs the out
With two strikes Walker goes to the 4-seam fastball: 13.4% of his two-strike pitches, against 8.7% the rest of the time.
112 two-strike pitches in 2026.
He throws strikes to one type of hitter and not the other
Walker lands 45% of his fastballs in the zone and only 34.6% of his breaking balls.
222 of his fastballs, 104 of his breaking balls.
Hitters cannot square him up, the contact is weak
Contact against Walker is weak: 87.5 mph off the bat on average, 63rd percentile.
424 pitches in 2026. 63rd percentile among qualified pitchers in 2026, 197th in MLB.
One pitch of his spins more than almost anyone's
Walker's cutter spins at 2,411 rpm, the highest in his arsenal.
84 thrown in 2026.
He gets ahead early and pitches from in front all night
Walker throws a strike on the first pitch 61.2% of the time.
116 plate appearances started in 2026.
Almost nothing hit off him is hit well
Only 36.5% of the contact Walker gives up is hit hard, 63rd percentile.
424 pitches in 2026. 63rd percentile among qualified pitchers in 2026, 197th in MLB.
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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 offspeed pitches: a .418 expected average against them, against .275 on his breaking balls.
98 of his offspeed pitches thrown.
He throws strikes to one type of hitter and not the other
Walker lands 45% of his fastballs in the zone and only 34.6% of his breaking balls.
222 of his fastballs, 104 of his breaking balls.
The numbers behind these live in Matchups.
Take me there
He pitches around the zone once runners are on
Walker throws 54.6% of his pitches in the zone with a runner in scoring position and 37.6% with the bases empty.
97 pitches with a runner in scoring position, 327 with the bases empty.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his moves in a way hitters rarely see
Walker's 4-seam fastball carries 16.7 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
42 thrown, averaging 91.9 mph.
One pitch of his runs sideways more than almost anyone's
Walker's sinker moves 15.3 inches toward the third-base side, the biggest horizontal move in his arsenal.
96 thrown, averaging 91.8 mph.
The numbers behind these live in Pitch Data.
Take me there
There is one pitch of his that keeps getting hit
Contact off Walker's 4-seam fastball leaves the bat at 96.5 mph, against 79.5 off his curveball.
42 and 53 of them thrown.
The gap between his pitches is what makes them work
17.5 mph separates Walker's 4-seam fastball from his curveball, 91.9 against 74.4.
42 and 53 of them respectively.
He saves one pitch for one side of the plate
Walker throws the splitter 32.7% of the time against left-handers and 7.9% against right-handers.
164 pitches to right-handers, 260 to left-handers.
His pitches move in ways that fit together
Walker works with 6 pitches: Splitter, Sinker, Cutter and Curveball, and a little else. The splitter is 23.1% of everything he throws.
424 classified pitches in 2026.
His fastball is the pitch everything else is built on
Walker's sinker averages 91.8 mph, and has touched 94.0.
96 thrown, 22.6% of his pitches.
One pitch of his spins more than almost anyone's
Walker's cutter spins at 2,411 rpm, the highest in his arsenal.
84 thrown in 2026.
The numbers behind these live in Pitch Data.
Take me there
He gets by without much velocity, and it costs him
Walker averages 86.1 mph across his arsenal, 10th percentile in the league.
424 pitches in 2026. 10th percentile among qualified pitchers in 2026, 481st in MLB.
The numbers behind these live in Pitch Data.
Take me there
How much of the zone he uses depends on the count
Walker puts 58.9% of his pitches in the zone when he is behind and 34.1% when he is ahead.
112 located pitches behind, 126 ahead.
When he falls behind, hitters know exactly what is coming
Behind in the count Walker throws a fastball 60.7% of the time, against 44.4% when he is ahead.
112 pitches behind in the count, 126 ahead.
This is the pitch he goes to when he needs the out
With two strikes Walker goes to the 4-seam fastball: 13.4% of his two-strike pitches, against 8.7% the rest of the time.
112 two-strike pitches in 2026.
He gets ahead early and pitches from in front all night
Walker throws a strike on the first pitch 61.2% of the time.
116 plate appearances started in 2026.
The numbers behind these live in Spray Chart.
Take me there
The contact he allows is the kind that finds grass
The quality of contact against Walker projects a .373 average, 11th percentile.
424 pitches in 2026. 11th percentile among qualified pitchers in 2026, 477th in MLB.
Hitters cannot square him up, the contact is weak
Contact against Walker is weak: 87.5 mph off the bat on average, 63rd percentile.
424 pitches in 2026. 63rd percentile among qualified pitchers in 2026, 197th in MLB.
Almost nothing hit off him is hit well
Only 36.5% of the contact Walker gives up is hit hard, 63rd percentile.
424 pitches in 2026. 63rd percentile among qualified pitchers in 2026, 197th in MLB.
The numbers behind these live in Pitch Data.
Take me there
His ball is straighter than it should be
Walker's stuff spins at 2,033 rpm, 12th percentile in the league.
424 pitches in 2026. 12th percentile among qualified pitchers in 2026, 473rd in MLB.
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Walker lives at the bottom of the zone: his average pitch crosses at 2.27 feet, against a zone that runs 1.5 to 3.5.
424 located pitches in 2026.
He lives on the edges rather than over the middle
17% of Walker's pitches land in the middle third of the zone, well below what most pitchers give away.
72 of 424 located pitches.
The numbers behind these live in Pitch Data.
Take me there
He releases the ball about where everyone else does
Walker releases the ball 6.0 feet down the mound, a shorter stride than most.
299 tracked pitches in 2026.
The numbers behind these live in Pitch Data.
Take me there
He cannot find the zone often enough
Walker works off the plate, with only 41.5% of his pitches in the zone, 33rd percentile.
424 pitches in 2026. 33rd percentile among qualified pitchers in 2026, 358th in MLB.
Phillies
Career team 2023–2026