His fastball is the pitch everything else is built on
Petersen's 4-seam fastball averages 97.1 mph, and has touched 99.1.
140 thrown, 55.6% of his pitches.
One pitch of his moves in a way hitters rarely see
Petersen's 4-seam fastball carries 19.3 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
140 thrown, averaging 97.1 mph.
He pitches differently depending on which hand is up
Petersen puts 43.3% of his pitches to right-handers in the zone and 51.4% of his pitches to left-handers.
104 pitches to right-handed hitters, 148 to left-handed hitters.
He fills the strike zone and makes hitters beat him
Petersen lives in the strike zone: 48% of his pitches are in it, 91st percentile.
252 pitches in 2026. 91st percentile among qualified pitchers in 2026, 51st in MLB.
There is one pitch of his that keeps getting hit
Contact off Petersen's slider leaves the bat at 97.2 mph, against 85.5 off his changeup.
65 and 47 of them thrown.
He throws about as hard as anybody in the league
Petersen averages 92.5 mph across his arsenal, 87th percentile in the league.
252 pitches in 2026. 87th percentile among qualified pitchers in 2026, 71st in MLB.
When hitters connect off him, they hit it hard
Hitters average 92.8 mph off the bat against Petersen, 4th percentile.
252 pitches in 2026. 4th percentile among qualified pitchers in 2026, 513th in MLB.
When he falls behind, hitters know exactly what is coming
Behind in the count Petersen throws a fastball 67.2% of the time, against 52.6% when he is ahead.
58 pitches behind in the count, 78 ahead.
He works one part of the zone far more than the rest
Petersen lives at the bottom of the zone: his average pitch crosses at 2.20 feet, against a zone that runs 1.5 to 3.5.
252 located pitches in 2026.
One type of hitter does all the damage against him
Hitters do their damage on his breaking balls: a .375 expected average against them, against .313 on his fastballs.
65 of his breaking balls thrown.
His pitches move in ways that fit together
Petersen works with 3 pitches: 4-Seam Fastball, Slider and Changeup. The 4-seam fastball is 55.6% of everything he throws.
252 classified pitches in 2026.
The angle he throws from is unusual, and hitters notice
Petersen releases the ball from a three-quarters slot, about 60 degrees above horizontal and 1.0 feet to the third-base side of the rubber.
252 tracked release points, averaging 6.3 feet off the ground.
His ball is straighter than it should be
Petersen's stuff spins at 2,111 rpm, 22nd percentile in the league.
252 pitches in 2026. 22nd percentile among qualified pitchers in 2026, 418th in MLB.
He gets ahead early and pitches from in front all night
Petersen throws a strike on the first pitch 64.2% of the time.
67 plate appearances started in 2026.
Too much of the contact against him is loud
45.5% of the contact Petersen gives up is hit hard, 24th percentile.
252 pitches in 2026. 24th percentile among qualified pitchers in 2026, 410th in MLB.
He throws strikes to one type of hitter and not the other
Petersen lands 52.1% of his fastballs in the zone and only 40% of his breaking balls.
140 of his fastballs, 65 of his breaking balls.
He saves one pitch for one side of the plate
Petersen throws the slider 34.6% of the time against right-handers and 19.6% against left-handers.
104 pitches to right-handers, 148 to left-handers.
This is the pitch he goes to when he needs the out
With two strikes Petersen goes to the 4-seam fastball: 59.5% of his two-strike pitches, against 53.9% the rest of the time.
74 two-strike pitches in 2026.
The contact he allows should not turn into many hits
The quality of contact against Petersen projects a .298 average, 76th percentile.
252 pitches in 2026. 76th percentile among qualified pitchers in 2026, 129th in MLB.
One pitch of his runs sideways more than almost anyone's
Petersen's changeup moves 9.3 inches toward the third-base side, the biggest horizontal move in his arsenal.
47 thrown, averaging 88.0 mph.
The gap between his pitches is what makes them work
11.2 mph separates Petersen's 4-seam fastball from his slider, 97.1 against 85.8.
140 and 65 of them respectively.
He releases the ball about where everyone else does
Petersen releases the ball 6.3 feet down the mound, a shorter stride than most.
188 tracked pitches in 2026.
One pitch of his spins more than almost anyone's
Petersen's slider spins at 2,366 rpm, the highest in his arsenal.
65 thrown in 2026.
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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
Petersen's 4-seam fastball averages 97.1 mph, and has touched 99.1.
140 thrown, 55.6% of his pitches.
There is one pitch of his that keeps getting hit
Contact off Petersen's slider leaves the bat at 97.2 mph, against 85.5 off his changeup.
65 and 47 of them thrown.
His pitches move in ways that fit together
Petersen works with 3 pitches: 4-Seam Fastball, Slider and Changeup. The 4-seam fastball is 55.6% of everything he throws.
252 classified pitches in 2026.
He saves one pitch for one side of the plate
Petersen throws the slider 34.6% of the time against right-handers and 19.6% against left-handers.
104 pitches to right-handers, 148 to left-handers.
The gap between his pitches is what makes them work
11.2 mph separates Petersen's 4-seam fastball from his slider, 97.1 against 85.8.
140 and 65 of them respectively.
One pitch of his spins more than almost anyone's
Petersen's slider spins at 2,366 rpm, the highest in his arsenal.
65 thrown in 2026.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his moves in a way hitters rarely see
Petersen's 4-seam fastball carries 19.3 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
140 thrown, averaging 97.1 mph.
One pitch of his runs sideways more than almost anyone's
Petersen's changeup moves 9.3 inches toward the third-base side, the biggest horizontal move in his arsenal.
47 thrown, averaging 88.0 mph.
The numbers behind these live in Matchups.
Take me there
He pitches differently depending on which hand is up
Petersen puts 43.3% of his pitches to right-handers in the zone and 51.4% of his pitches to left-handers.
104 pitches to right-handed hitters, 148 to left-handed hitters.
The numbers behind these live in Pitch Data.
Take me there
He fills the strike zone and makes hitters beat him
Petersen lives in the strike zone: 48% of his pitches are in it, 91st percentile.
252 pitches in 2026. 91st percentile among qualified pitchers in 2026, 51st in MLB.
The numbers behind these live in Pitch Data.
Take me there
He throws about as hard as anybody in the league
Petersen averages 92.5 mph across his arsenal, 87th percentile in the league.
252 pitches in 2026. 87th percentile among qualified pitchers in 2026, 71st in MLB.
The numbers behind these live in Spray Chart.
Take me there
When hitters connect off him, they hit it hard
Hitters average 92.8 mph off the bat against Petersen, 4th percentile.
252 pitches in 2026. 4th percentile among qualified pitchers in 2026, 513th in MLB.
Too much of the contact against him is loud
45.5% of the contact Petersen gives up is hit hard, 24th percentile.
252 pitches in 2026. 24th percentile among qualified pitchers in 2026, 410th in MLB.
The contact he allows should not turn into many hits
The quality of contact against Petersen projects a .298 average, 76th percentile.
252 pitches in 2026. 76th percentile among qualified pitchers in 2026, 129th in MLB.
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 Petersen throws a fastball 67.2% of the time, against 52.6% when he is ahead.
58 pitches behind in the count, 78 ahead.
He gets ahead early and pitches from in front all night
Petersen throws a strike on the first pitch 64.2% of the time.
67 plate appearances started in 2026.
This is the pitch he goes to when he needs the out
With two strikes Petersen goes to the 4-seam fastball: 59.5% of his two-strike pitches, against 53.9% the rest of the time.
74 two-strike pitches in 2026.
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Petersen lives at the bottom of the zone: his average pitch crosses at 2.20 feet, against a zone that runs 1.5 to 3.5.
252 located pitches 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 breaking balls: a .375 expected average against them, against .313 on his fastballs.
65 of his breaking balls thrown.
He throws strikes to one type of hitter and not the other
Petersen lands 52.1% of his fastballs in the zone and only 40% of his breaking balls.
140 of his fastballs, 65 of his breaking balls.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Petersen releases the ball from a three-quarters slot, about 60 degrees above horizontal and 1.0 feet to the third-base side of the rubber.
252 tracked release points, averaging 6.3 feet off the ground.
He releases the ball about where everyone else does
Petersen releases the ball 6.3 feet down the mound, a shorter stride than most.
188 tracked pitches in 2026.
The numbers behind these live in Pitch Data.
Take me there
His ball is straighter than it should be
Petersen's stuff spins at 2,111 rpm, 22nd percentile in the league.
252 pitches in 2026. 22nd percentile among qualified pitchers in 2026, 418th in MLB.
Marlins