His fastball is the pitch everything else is built on
Petersen's 4-seam fastball averages 98.0 mph, and has touched 100.9.
697 thrown, 61.7% of his pitches.
One pitch of his moves in a way hitters rarely see
Petersen's 4-seam fastball carries 19.0 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
697 thrown, averaging 98.0 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.
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.
His pitches move in ways that fit together
Petersen works with 3 pitches: 4-Seam Fastball, Slider and Changeup. The 4-seam fastball is 61.7% of everything he throws.
1129 classified pitches in 2026.
This is the pitch he goes to when he needs the out
With two strikes Petersen goes to the 4-seam fastball: 68% of his two-strike pitches, against 58.4% the rest of the time.
391 two-strike 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.
The angle he throws from is unusual, and hitters notice
Petersen releases the ball from a three-quarters slot, about 64 degrees above horizontal and 0.9 feet to the third-base side of the rubber.
1129 tracked release points, averaging 6.4 feet off the ground.
There is one pitch of his that keeps getting hit
Contact off Petersen's 4-seam fastball leaves the bat at 92.3 mph, against 88.1 off his slider.
697 and 302 of them thrown.
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.
How much of the zone he uses depends on the count
Petersen puts 57.6% of his pitches in the zone when he is behind and 44.3% when he is ahead.
264 located pitches behind, 388 ahead.
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.
One pitch of his runs sideways more than almost anyone's
Petersen's changeup moves 9.9 inches toward the third-base side, the biggest horizontal move in his arsenal.
130 thrown, averaging 89.7 mph.
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.
He lives on the edges rather than over the middle
18.3% of Petersen's pitches land in the middle third of the zone, well below what most pitchers give away.
207 of 1129 located pitches.
He releases the ball about where everyone else does
Petersen releases the ball 6.2 feet down the mound, a shorter stride than most.
1065 tracked pitches in 2026.
The gap between his pitches is what makes them work
10.2 mph separates Petersen's 4-seam fastball from his slider, 98.0 against 87.8.
697 and 302 of them respectively.
He gets ahead early and pitches from in front all night
Petersen throws a strike on the first pitch 61.1% of the time.
270 plate appearances started in 2026.
One pitch of his spins more than almost anyone's
Petersen's slider spins at 2,371 rpm, the highest in his arsenal.
302 thrown in 2026.
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The numbers behind these live in Pitch Data.
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His fastball is the pitch everything else is built on
Petersen's 4-seam fastball averages 98.0 mph, and has touched 100.9.
697 thrown, 61.7% of his pitches.
His pitches move in ways that fit together
Petersen works with 3 pitches: 4-Seam Fastball, Slider and Changeup. The 4-seam fastball is 61.7% of everything he throws.
1129 classified pitches in 2026.
There is one pitch of his that keeps getting hit
Contact off Petersen's 4-seam fastball leaves the bat at 92.3 mph, against 88.1 off his slider.
697 and 302 of them thrown.
The gap between his pitches is what makes them work
10.2 mph separates Petersen's 4-seam fastball from his slider, 98.0 against 87.8.
697 and 302 of them respectively.
One pitch of his spins more than almost anyone's
Petersen's slider spins at 2,371 rpm, the highest in his arsenal.
302 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 19.0 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
697 thrown, averaging 98.0 mph.
One pitch of his runs sideways more than almost anyone's
Petersen's changeup moves 9.9 inches toward the third-base side, the biggest horizontal move in his arsenal.
130 thrown, averaging 89.7 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.
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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
This is the pitch he goes to when he needs the out
With two strikes Petersen goes to the 4-seam fastball: 68% of his two-strike pitches, against 58.4% the rest of the time.
391 two-strike pitches in 2026.
How much of the zone he uses depends on the count
Petersen puts 57.6% of his pitches in the zone when he is behind and 44.3% when he is ahead.
264 located pitches behind, 388 ahead.
He gets ahead early and pitches from in front all night
Petersen throws a strike on the first pitch 61.1% of the time.
270 plate appearances started 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 64 degrees above horizontal and 0.9 feet to the third-base side of the rubber.
1129 tracked release points, averaging 6.4 feet off the ground.
He releases the ball about where everyone else does
Petersen releases the ball 6.2 feet down the mound, a shorter stride than most.
1065 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.
The numbers behind these live in Pitch Data.
Take me there
He lives on the edges rather than over the middle
18.3% of Petersen's pitches land in the middle third of the zone, well below what most pitchers give away.
207 of 1129 located pitches.
Marlins