His fastball is the pitch everything else is built on
Walter's cutter averages 88.2 mph, and has touched 90.7.
223 thrown, 27.4% of his pitches.
When he falls behind, hitters know exactly what is coming
Behind in the count Walter throws a fastball 84% of the time, against 48.4% when he is ahead.
188 pitches behind in the count, 256 ahead.
One type of hitter does all the damage against him
Hitters do their damage on his breaking balls: a .357 expected average against them, against .246 on his offspeed pitches.
183 of his breaking balls thrown.
One pitch of his runs sideways more than almost anyone's
Walter's sinker moves 128.4 inches toward the third-base side, the biggest horizontal move in his arsenal.
102 thrown, averaging 91.5 mph.
This is the pitch he goes to when he needs the out
With two strikes Walter goes to the 4-seam fastball: 32.7% of his two-strike pitches, against 13.2% the rest of the time.
254 two-strike pitches in 2025.
He pitches differently depending on which hand is up
Walter puts 48% of his pitches to right-handers in the zone and 55.1% of his pitches to left-handers.
667 pitches to right-handed hitters, 147 to left-handed hitters.
He gets by without much velocity, and it costs him
Walter averages 86.0 mph across his arsenal, 11th percentile in the league.
814 pitches in 2025. 11th percentile among qualified pitchers in 2025, 693rd in MLB.
The angle he throws from is unusual, and hitters notice
Walter releases the ball from a low three-quarters slot, about 28 degrees above horizontal and 2.1 feet to the first-base side of the rubber.
814 tracked release points, averaging 5.5 feet off the ground.
There is one pitch of his that keeps getting hit
Contact off Walter's sinker leaves the bat at 94.7 mph, against 78.1 off his sweeper.
102 and 183 of them thrown.
He saves one pitch for one side of the plate
Walter throws the sinker 38.1% of the time against left-handers and 6.9% against right-handers.
667 pitches to right-handers, 147 to left-handers.
Hitters cannot square him up, the contact is weak
Contact against Walter is weak: 85.8 mph off the bat on average, 92nd percentile.
814 pitches in 2025. 92nd percentile among qualified pitchers in 2025, 66th in MLB.
How much of the zone he uses depends on the count
Walter puts 70.2% of his pitches in the zone when he is behind and 33.2% when he is ahead.
188 located pitches behind, 256 ahead.
He fills the strike zone and makes hitters beat him
Walter lives in the strike zone: 49.3% of his pitches are in it, 74th percentile.
814 pitches in 2025. 74th percentile among qualified pitchers in 2025, 200th in MLB.
One pitch of his moves in a way hitters rarely see
Walter's 4-seam fastball carries 12.3 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
157 thrown, averaging 91.8 mph.
He pitches around the zone once runners are on
Walter throws 45.4% of his pitches in the zone with a runner in scoring position and 49.9% with the bases empty.
108 pitches with a runner in scoring position, 706 with the bases empty.
He gets ahead early and pitches from in front all night
Walter throws a strike on the first pitch 67.5% of the time.
212 plate appearances started in 2025.
His pitches move in ways that fit together
Walter works with 5 pitches: Cutter, Sweeper, 4-Seam Fastball and Changeup, and a little else. The cutter is 27.4% of everything he throws.
814 classified pitches in 2025.
He works one part of the zone far more than the rest
Walter lives at the bottom of the zone: his average pitch crosses at 2.35 feet, against a zone that runs 1.5 to 3.5.
814 located pitches in 2025.
He throws strikes to one type of hitter and not the other
Walter lands 58.1% of his fastballs in the zone and only 45.9% of his breaking balls.
482 of his fastballs, 183 of his breaking balls.
The gap between his pitches is what makes them work
12.3 mph separates Walter's 4-seam fastball from his sweeper, 91.8 against 79.5.
157 and 183 of them respectively.
He lives on the edges rather than over the middle
21.9% of Walter's pitches land in the middle third of the zone, well below what most pitchers give away.
178 of 814 located pitches.
One pitch of his spins more than almost anyone's
Walter's sweeper spins at 2,555 rpm, the highest in his arsenal.
183 thrown in 2025.
He gets so far down the mound the ball arrives early
Walter releases the ball 6.6 feet down the mound, so the ball arrives sooner than the radar gun suggests.
814 tracked pitches in 2025.
Almost nothing hit off him is hit well
Only 38.8% of the contact Walter gives up is hit hard, 64th percentile.
814 pitches in 2025. 64th percentile among qualified pitchers in 2025, 279th 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
Walter's cutter averages 88.2 mph, and has touched 90.7.
223 thrown, 27.4% of his pitches.
There is one pitch of his that keeps getting hit
Contact off Walter's sinker leaves the bat at 94.7 mph, against 78.1 off his sweeper.
102 and 183 of them thrown.
He saves one pitch for one side of the plate
Walter throws the sinker 38.1% of the time against left-handers and 6.9% against right-handers.
667 pitches to right-handers, 147 to left-handers.
His pitches move in ways that fit together
Walter works with 5 pitches: Cutter, Sweeper, 4-Seam Fastball and Changeup, and a little else. The cutter is 27.4% of everything he throws.
814 classified pitches in 2025.
The gap between his pitches is what makes them work
12.3 mph separates Walter's 4-seam fastball from his sweeper, 91.8 against 79.5.
157 and 183 of them respectively.
One pitch of his spins more than almost anyone's
Walter's sweeper spins at 2,555 rpm, the highest in his arsenal.
183 thrown in 2025.
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 Walter throws a fastball 84% of the time, against 48.4% when he is ahead.
188 pitches behind in the count, 256 ahead.
This is the pitch he goes to when he needs the out
With two strikes Walter goes to the 4-seam fastball: 32.7% of his two-strike pitches, against 13.2% the rest of the time.
254 two-strike pitches in 2025.
How much of the zone he uses depends on the count
Walter puts 70.2% of his pitches in the zone when he is behind and 33.2% when he is ahead.
188 located pitches behind, 256 ahead.
He gets ahead early and pitches from in front all night
Walter throws a strike on the first pitch 67.5% of the time.
212 plate appearances started in 2025.
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 breaking balls: a .357 expected average against them, against .246 on his offspeed pitches.
183 of his breaking balls thrown.
He throws strikes to one type of hitter and not the other
Walter lands 58.1% of his fastballs in the zone and only 45.9% of his breaking balls.
482 of his fastballs, 183 of his breaking balls.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Walter's sinker moves 128.4 inches toward the third-base side, the biggest horizontal move in his arsenal.
102 thrown, averaging 91.5 mph.
One pitch of his moves in a way hitters rarely see
Walter's 4-seam fastball carries 12.3 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
157 thrown, averaging 91.8 mph.
The numbers behind these live in Matchups.
Take me there
He pitches differently depending on which hand is up
Walter puts 48% of his pitches to right-handers in the zone and 55.1% of his pitches to left-handers.
667 pitches to right-handed hitters, 147 to left-handed hitters.
The numbers behind these live in Pitch Data.
Take me there
He gets by without much velocity, and it costs him
Walter averages 86.0 mph across his arsenal, 11th percentile in the league.
814 pitches in 2025. 11th percentile among qualified pitchers in 2025, 693rd in MLB.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Walter releases the ball from a low three-quarters slot, about 28 degrees above horizontal and 2.1 feet to the first-base side of the rubber.
814 tracked release points, averaging 5.5 feet off the ground.
He gets so far down the mound the ball arrives early
Walter releases the ball 6.6 feet down the mound, so the ball arrives sooner than the radar gun suggests.
814 tracked pitches in 2025.
The numbers behind these live in Spray Chart.
Take me there
Hitters cannot square him up, the contact is weak
Contact against Walter is weak: 85.8 mph off the bat on average, 92nd percentile.
814 pitches in 2025. 92nd percentile among qualified pitchers in 2025, 66th in MLB.
Almost nothing hit off him is hit well
Only 38.8% of the contact Walter gives up is hit hard, 64th percentile.
814 pitches in 2025. 64th percentile among qualified pitchers in 2025, 279th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He fills the strike zone and makes hitters beat him
Walter lives in the strike zone: 49.3% of his pitches are in it, 74th percentile.
814 pitches in 2025. 74th percentile among qualified pitchers in 2025, 200th in MLB.
The numbers behind these live in Matchups.
Take me there
He pitches around the zone once runners are on
Walter throws 45.4% of his pitches in the zone with a runner in scoring position and 49.9% with the bases empty.
108 pitches with a runner in scoring position, 706 with the bases empty.
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Walter lives at the bottom of the zone: his average pitch crosses at 2.35 feet, against a zone that runs 1.5 to 3.5.
814 located pitches in 2025.
He lives on the edges rather than over the middle
21.9% of Walter's pitches land in the middle third of the zone, well below what most pitchers give away.
178 of 814 located pitches.
Astros
Career team 2025