He pitches differently depending on which hand is up
Peterson puts 38.8% of his pitches to right-handers in the zone and 48.6% of his pitches to left-handers.
453 pitches to right-handed hitters, 183 to left-handed hitters.
There is one pitch of his that keeps getting hit
Contact off Peterson's sinker leaves the bat at 91.6 mph, against 83.0 off his 4-seam fastball.
729 and 628 of them thrown.
When he falls behind, hitters know exactly what is coming
Behind in the count Peterson throws a fastball 65.3% of the time, against 42.6% when he is ahead.
686 pitches behind in the count, 714 ahead.
This is the pitch he goes to when he needs the out
With two strikes Peterson goes to the slider: 33.2% of his two-strike pitches, against 17.6% the rest of the time.
683 two-strike pitches in 2026.
He gets so far down the mound the ball arrives early
Peterson releases the ball 7.1 feet down the mound, so the ball arrives sooner than the radar gun suggests.
2302 tracked pitches in 2026.
One pitch of his runs sideways more than almost anyone's
Peterson's sinker moves 13.7 inches toward the first-base side, the biggest horizontal move in his arsenal.
729 thrown, averaging 92.1 mph.
He saves one pitch for one side of the plate
Peterson throws the slider 37.4% of the time against left-handers and 15.7% against right-handers.
1770 pitches to right-handers, 706 to left-handers.
He throws strikes to one type of hitter and not the other
Peterson lands 44% of his breaking balls in the zone and only 25.7% of his offspeed pitches.
217 of his breaking balls, 75 of his offspeed pitches.
Too much of the contact against him is loud
47.6% of the contact Peterson gives up is hit hard, 17th percentile.
636 pitches in 2026. 17th percentile among qualified pitchers in 2026, 447th in MLB.
His pitches move in ways that fit together
Peterson works with 5 pitches: Sinker, 4-Seam Fastball, Slider and Changeup, and a little else. The sinker is 29.4% of everything he throws.
2476 classified pitches in 2026.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .383 expected average against them, against .327 on his breaking balls.
344 of his fastballs thrown.
One pitch of his moves in a way hitters rarely see
Peterson's 4-seam fastball carries 11.6 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
628 thrown, averaging 92.5 mph.
The contact he allows is the kind that finds grass
The quality of contact against Peterson projects a .363 average, 18th percentile.
636 pitches in 2026. 18th percentile among qualified pitchers in 2026, 440th in MLB.
He works one part of the zone far more than the rest
Peterson lives at the bottom of the zone: his average pitch crosses at 2.31 feet, against a zone that runs 1.5 to 3.5.
2472 located pitches in 2026.
He gets by without much velocity, and it costs him
Peterson averages 88.4 mph across his arsenal, 31st percentile in the league.
636 pitches in 2026. 31st percentile among qualified pitchers in 2026, 373rd in MLB.
His fastball is the pitch everything else is built on
Peterson's sinker averages 92.1 mph, and has touched 95.2.
729 thrown, 29.4% of his pitches.
His ball is straighter than it should be
Peterson's stuff spins at 2,145 rpm, 28th percentile in the league.
636 pitches in 2026. 28th percentile among qualified pitchers in 2026, 388th in MLB.
How much of the zone he uses depends on the count
Peterson puts 56.2% of his pitches in the zone when he is behind and 41.2% when he is ahead.
685 located pitches behind, 712 ahead.
He cannot find the zone often enough
Peterson works off the plate, with only 41.6% of his pitches in the zone, 35th percentile.
636 pitches in 2026. 35th percentile among qualified pitchers in 2026, 350th in MLB.
The angle he throws from is unusual, and hitters notice
Peterson releases the ball from a low three-quarters slot, about 43 degrees above horizontal and 1.5 feet to the first-base side of the rubber.
2472 tracked release points, averaging 6.0 feet off the ground.
He pitches around the zone once runners are on
Peterson throws 39.7% of his pitches in the zone with a runner in scoring position and 42.4% with the bases empty.
182 pitches with a runner in scoring position, 454 with the bases empty.
The gap between his pitches is what makes them work
12.0 mph separates Peterson's 4-seam fastball from his curveball, 92.5 against 80.5.
628 and 257 of them respectively.
His velocity drains away as the outing goes on
Peterson's fastball averages 92.6 mph in his first 25 pitches of a start and 92.1 past his 75th.
465 early fastballs, 145 late ones.
He lives on the edges rather than over the middle
18.6% of Peterson's pitches land in the middle third of the zone, well below what most pitchers give away.
461 of 2472 located pitches.
He gets ahead early and pitches from in front all night
Peterson throws a strike on the first pitch 61.8% of the time.
663 plate appearances started in 2026.
One pitch of his spins more than almost anyone's
Peterson's curveball spins at 2,416 rpm, the highest in his arsenal.
257 thrown in 2026.
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The numbers behind these live in Matchups.
Take me there
He pitches differently depending on which hand is up
Peterson puts 38.8% of his pitches to right-handers in the zone and 48.6% of his pitches to left-handers.
453 pitches to right-handed hitters, 183 to left-handed hitters.
The numbers behind these live in Pitch Data.
Take me there
There is one pitch of his that keeps getting hit
Contact off Peterson's sinker leaves the bat at 91.6 mph, against 83.0 off his 4-seam fastball.
729 and 628 of them thrown.
He saves one pitch for one side of the plate
Peterson throws the slider 37.4% of the time against left-handers and 15.7% against right-handers.
1770 pitches to right-handers, 706 to left-handers.
His pitches move in ways that fit together
Peterson works with 5 pitches: Sinker, 4-Seam Fastball, Slider and Changeup, and a little else. The sinker is 29.4% of everything he throws.
2476 classified pitches in 2026.
His fastball is the pitch everything else is built on
Peterson's sinker averages 92.1 mph, and has touched 95.2.
729 thrown, 29.4% of his pitches.
The gap between his pitches is what makes them work
12.0 mph separates Peterson's 4-seam fastball from his curveball, 92.5 against 80.5.
628 and 257 of them respectively.
One pitch of his spins more than almost anyone's
Peterson's curveball spins at 2,416 rpm, the highest in his arsenal.
257 thrown in 2026.
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 Peterson throws a fastball 65.3% of the time, against 42.6% when he is ahead.
686 pitches behind in the count, 714 ahead.
This is the pitch he goes to when he needs the out
With two strikes Peterson goes to the slider: 33.2% of his two-strike pitches, against 17.6% the rest of the time.
683 two-strike pitches in 2026.
How much of the zone he uses depends on the count
Peterson puts 56.2% of his pitches in the zone when he is behind and 41.2% when he is ahead.
685 located pitches behind, 712 ahead.
He gets ahead early and pitches from in front all night
Peterson throws a strike on the first pitch 61.8% of the time.
663 plate appearances started in 2026.
The numbers behind these live in Pitch Data.
Take me there
He gets so far down the mound the ball arrives early
Peterson releases the ball 7.1 feet down the mound, so the ball arrives sooner than the radar gun suggests.
2302 tracked pitches in 2026.
The angle he throws from is unusual, and hitters notice
Peterson releases the ball from a low three-quarters slot, about 43 degrees above horizontal and 1.5 feet to the first-base side of the rubber.
2472 tracked release points, averaging 6.0 feet off the ground.
His velocity drains away as the outing goes on
Peterson's fastball averages 92.6 mph in his first 25 pitches of a start and 92.1 past his 75th.
465 early fastballs, 145 late ones.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Peterson's sinker moves 13.7 inches toward the first-base side, the biggest horizontal move in his arsenal.
729 thrown, averaging 92.1 mph.
One pitch of his moves in a way hitters rarely see
Peterson's 4-seam fastball carries 11.6 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
628 thrown, averaging 92.5 mph.
The numbers behind these live in Pitch Data.
Take me there
He throws strikes to one type of hitter and not the other
Peterson lands 44% of his breaking balls in the zone and only 25.7% of his offspeed pitches.
217 of his breaking balls, 75 of his offspeed pitches.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .383 expected average against them, against .327 on his breaking balls.
344 of his fastballs thrown.
The numbers behind these live in Spray Chart.
Take me there
Too much of the contact against him is loud
47.6% of the contact Peterson gives up is hit hard, 17th percentile.
636 pitches in 2026. 17th percentile among qualified pitchers in 2026, 447th in MLB.
The contact he allows is the kind that finds grass
The quality of contact against Peterson projects a .363 average, 18th percentile.
636 pitches in 2026. 18th percentile among qualified pitchers in 2026, 440th 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
Peterson lives at the bottom of the zone: his average pitch crosses at 2.31 feet, against a zone that runs 1.5 to 3.5.
2472 located pitches in 2026.
He lives on the edges rather than over the middle
18.6% of Peterson's pitches land in the middle third of the zone, well below what most pitchers give away.
461 of 2472 located pitches.
The numbers behind these live in Pitch Data.
Take me there
He gets by without much velocity, and it costs him
Peterson averages 88.4 mph across his arsenal, 31st percentile in the league.
636 pitches in 2026. 31st percentile among qualified pitchers in 2026, 373rd in MLB.
The numbers behind these live in Pitch Data.
Take me there
His ball is straighter than it should be
Peterson's stuff spins at 2,145 rpm, 28th percentile in the league.
636 pitches in 2026. 28th percentile among qualified pitchers in 2026, 388th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He cannot find the zone often enough
Peterson works off the plate, with only 41.6% of his pitches in the zone, 35th percentile.
636 pitches in 2026. 35th percentile among qualified pitchers in 2026, 350th in MLB.
The numbers behind these live in Matchups.
Take me there
He pitches around the zone once runners are on
Peterson throws 39.7% of his pitches in the zone with a runner in scoring position and 42.4% with the bases empty.
182 pitches with a runner in scoring position, 454 with the bases empty.
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