One pitch of his runs sideways more than almost anyone's
Mazur's sinker moves 99.2 inches toward the first-base side, the biggest horizontal move in his arsenal.
78 thrown, averaging 94.3 mph.
When he falls behind, hitters know exactly what is coming
Behind in the count Mazur throws a fastball 52.3% of the time, against 28.5% when he is ahead.
109 pitches behind in the count, 158 ahead.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .396 expected average against them, against .296 on his breaking balls.
195 of his fastballs thrown.
There is one pitch of his that keeps getting hit
Contact off Mazur's 4-seam fastball leaves the bat at 96.4 mph, against 78.6 off his sinker.
117 and 78 of them thrown.
One pitch of his moves in a way hitters rarely see
Mazur's 4-seam fastball carries 18.5 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
117 thrown, averaging 94.8 mph.
He gets ahead early and pitches from in front all night
Mazur throws a strike on the first pitch 70.5% of the time.
139 plate appearances started in 2025.
He pitches around the zone once runners are on
Mazur throws 54.8% of his pitches in the zone with a runner in scoring position and 48.4% with the bases empty.
115 pitches with a runner in scoring position, 374 with the bases empty.
He fills the strike zone and makes hitters beat him
Mazur lives in the strike zone: 49.9% of his pitches are in it, 81st percentile.
489 pitches in 2025. 81st percentile among qualified pitchers in 2025, 148th in MLB.
Almost nothing hit off him is hit well
Only 31.8% of the contact Mazur gives up is hit hard, 92nd percentile.
489 pitches in 2025. 92nd percentile among qualified pitchers in 2025, 66th in MLB.
He saves one pitch for one side of the plate
Mazur throws the sweeper 24.5% of the time against right-handers and 2.6% against left-handers.
216 pitches to right-handers, 273 to left-handers.
This is the pitch he goes to when he needs the out
With two strikes Mazur goes to the slider: 37.3% of his two-strike pitches, against 25.4% the rest of the time.
134 two-strike pitches in 2025.
His pitches move in ways that fit together
Mazur works with 6 pitches: Slider, 4-Seam Fastball, Sinker and Sweeper, and a little else. The slider is 28.6% of everything he throws.
489 classified pitches in 2025.
The angle he throws from is unusual, and hitters notice
Mazur releases the ball from a low three-quarters slot, about 41 degrees above horizontal and 1.8 feet to the third-base side of the rubber.
489 tracked release points, averaging 5.9 feet off the ground.
He pitches differently depending on which hand is up
Mazur puts 51.9% of his pitches to right-handers in the zone and 48.4% of his pitches to left-handers.
216 pitches to right-handed hitters, 273 to left-handed hitters.
He throws strikes to one type of hitter and not the other
Mazur lands 59.5% of his fastballs in the zone and only 44.7% of his breaking balls.
195 of his fastballs, 253 of his breaking balls.
He works one part of the zone far more than the rest
Mazur lives at the bottom of the zone: his average pitch crosses at 2.33 feet, against a zone that runs 1.5 to 3.5.
489 located pitches in 2025.
One pitch of his spins more than almost anyone's
Mazur's sweeper spins at 2,609 rpm, the highest in his arsenal.
60 thrown in 2025.
How much of the zone he uses depends on the count
Mazur puts 60.6% of his pitches in the zone when he is behind and 42.4% when he is ahead.
109 located pitches behind, 158 ahead.
Hitters cannot square him up, the contact is weak
Contact against Mazur is weak: 87.5 mph off the bat on average, 75th percentile.
489 pitches in 2025. 75th percentile among qualified pitchers in 2025, 193rd in MLB.
He releases the ball about where everyone else does
Mazur releases the ball 6.1 feet down the mound, a shorter stride than most.
489 tracked pitches in 2025.
His ball moves more than the hitter expects it to
Mazur's stuff spins at 2,371 rpm, 69th percentile in the league.
489 pitches in 2025. 69th percentile among qualified pitchers in 2025, 244th in MLB.
The gap between his pitches is what makes them work
12.4 mph separates Mazur's 4-seam fastball from his curveball, 94.8 against 82.4.
117 and 53 of them respectively.
His fastball is the pitch everything else is built on
Mazur's 4-seam fastball averages 94.8 mph, and has touched 96.8.
117 thrown, 23.9% of his pitches.
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The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Mazur's sinker moves 99.2 inches toward the first-base side, the biggest horizontal move in his arsenal.
78 thrown, averaging 94.3 mph.
One pitch of his moves in a way hitters rarely see
Mazur's 4-seam fastball carries 18.5 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
117 thrown, averaging 94.8 mph.
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 Mazur throws a fastball 52.3% of the time, against 28.5% when he is ahead.
109 pitches behind in the count, 158 ahead.
He gets ahead early and pitches from in front all night
Mazur throws a strike on the first pitch 70.5% of the time.
139 plate appearances started in 2025.
This is the pitch he goes to when he needs the out
With two strikes Mazur goes to the slider: 37.3% of his two-strike pitches, against 25.4% the rest of the time.
134 two-strike pitches in 2025.
How much of the zone he uses depends on the count
Mazur puts 60.6% of his pitches in the zone when he is behind and 42.4% when he is ahead.
109 located pitches behind, 158 ahead.
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 .396 expected average against them, against .296 on his breaking balls.
195 of his fastballs thrown.
He throws strikes to one type of hitter and not the other
Mazur lands 59.5% of his fastballs in the zone and only 44.7% of his breaking balls.
195 of his fastballs, 253 of his breaking balls.
The numbers behind these live in Pitch Data.
Take me there
There is one pitch of his that keeps getting hit
Contact off Mazur's 4-seam fastball leaves the bat at 96.4 mph, against 78.6 off his sinker.
117 and 78 of them thrown.
He saves one pitch for one side of the plate
Mazur throws the sweeper 24.5% of the time against right-handers and 2.6% against left-handers.
216 pitches to right-handers, 273 to left-handers.
His pitches move in ways that fit together
Mazur works with 6 pitches: Slider, 4-Seam Fastball, Sinker and Sweeper, and a little else. The slider is 28.6% of everything he throws.
489 classified pitches in 2025.
One pitch of his spins more than almost anyone's
Mazur's sweeper spins at 2,609 rpm, the highest in his arsenal.
60 thrown in 2025.
The gap between his pitches is what makes them work
12.4 mph separates Mazur's 4-seam fastball from his curveball, 94.8 against 82.4.
117 and 53 of them respectively.
His fastball is the pitch everything else is built on
Mazur's 4-seam fastball averages 94.8 mph, and has touched 96.8.
117 thrown, 23.9% of his pitches.
The numbers behind these live in Matchups.
Take me there
He pitches around the zone once runners are on
Mazur throws 54.8% of his pitches in the zone with a runner in scoring position and 48.4% with the bases empty.
115 pitches with a runner in scoring position, 374 with the bases empty.
The numbers behind these live in Pitch Data.
Take me there
He fills the strike zone and makes hitters beat him
Mazur lives in the strike zone: 49.9% of his pitches are in it, 81st percentile.
489 pitches in 2025. 81st percentile among qualified pitchers in 2025, 148th in MLB.
The numbers behind these live in Spray Chart.
Take me there
Almost nothing hit off him is hit well
Only 31.8% of the contact Mazur gives up is hit hard, 92nd percentile.
489 pitches in 2025. 92nd percentile among qualified pitchers in 2025, 66th in MLB.
Hitters cannot square him up, the contact is weak
Contact against Mazur is weak: 87.5 mph off the bat on average, 75th percentile.
489 pitches in 2025. 75th percentile among qualified pitchers in 2025, 193rd in MLB.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Mazur releases the ball from a low three-quarters slot, about 41 degrees above horizontal and 1.8 feet to the third-base side of the rubber.
489 tracked release points, averaging 5.9 feet off the ground.
He releases the ball about where everyone else does
Mazur releases the ball 6.1 feet down the mound, a shorter stride than most.
489 tracked pitches in 2025.
The numbers behind these live in Matchups.
Take me there
He pitches differently depending on which hand is up
Mazur puts 51.9% of his pitches to right-handers in the zone and 48.4% of his pitches to left-handers.
216 pitches to right-handed hitters, 273 to left-handed hitters.
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Mazur lives at the bottom of the zone: his average pitch crosses at 2.33 feet, against a zone that runs 1.5 to 3.5.
489 located pitches in 2025.
The numbers behind these live in Pitch Data.
Take me there
His ball moves more than the hitter expects it to
Mazur's stuff spins at 2,371 rpm, 69th percentile in the league.
489 pitches in 2025. 69th percentile among qualified pitchers in 2025, 244th in MLB.
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Career team 2024