One type of hitter does all the damage against him
Hitters do their damage on his breaking balls: a .437 expected average against them, against .263 on his fastballs.
86 of his breaking balls thrown.
There is one pitch of his that keeps getting hit
Contact off Rolison's curveball leaves the bat at 91.7 mph, against 82.5 off his sinker.
162 and 142 of them thrown.
One pitch of his moves in a way hitters rarely see
Rolison's curveball carries 14.2 inches of drop against a spinless ball, the biggest vertical move in his arsenal.
162 thrown, averaging 79.5 mph.
He fills the strike zone and makes hitters beat him
Rolison lives in the strike zone: 46.5% of his pitches are in it, 84th percentile.
175 pitches in 2026. 84th percentile among qualified pitchers in 2026, 86th in MLB.
He saves one pitch for one side of the plate
Rolison throws the curveball 28.9% of the time against right-handers and 2.2% against left-handers.
526 pitches to right-handers, 464 to left-handers.
This is the pitch he goes to when he needs the out
With two strikes Rolison goes to the sweeper: 22.7% of his two-strike pitches, against 12.2% the rest of the time.
269 two-strike pitches in 2026.
The gap between his pitches is what makes them work
15.5 mph separates Rolison's sinker from his curveball, 95.0 against 79.5.
142 and 162 of them respectively.
One pitch of his runs sideways more than almost anyone's
Rolison's sweeper moves 13.6 inches toward the third-base side, the biggest horizontal move in his arsenal.
149 thrown, averaging 85.1 mph.
He works one part of the zone far more than the rest
Rolison lives at the bottom of the zone: his average pitch crosses at 2.22 feet, against a zone that runs 1.5 to 3.5.
987 located pitches in 2026.
When he falls behind, hitters know exactly what is coming
Behind in the count Rolison throws a fastball 63.5% of the time, against 48.4% when he is ahead.
288 pitches behind in the count, 256 ahead.
The contact he allows is the kind that finds grass
The quality of contact against Rolison projects a .365 average, 17th percentile.
175 pitches in 2026. 17th percentile among qualified pitchers in 2026, 445th in MLB.
His ball moves more than the hitter expects it to
Rolison's stuff spins at 2,412 rpm, 78th percentile in the league.
175 pitches in 2026. 78th percentile among qualified pitchers in 2026, 118th in MLB.
The angle he throws from is unusual, and hitters notice
Rolison releases the ball from a low three-quarters slot, about 43 degrees above horizontal and 1.6 feet to the first-base side of the rubber.
987 tracked release points, averaging 5.8 feet off the ground.
One pitch of his spins more than almost anyone's
Rolison's curveball spins at 2,668 rpm, the highest in his arsenal.
162 thrown in 2026.
How much of the zone he uses depends on the count
Rolison puts 57.6% of his pitches in the zone when he is behind and 42% when he is ahead.
288 located pitches behind, 255 ahead.
He gets by without much velocity, and it costs him
Rolison averages 88.8 mph across his arsenal, 36th percentile in the league.
175 pitches in 2026. 36th percentile among qualified pitchers in 2026, 345th in MLB.
His pitches move in ways that fit together
Rolison works with 5 pitches: 4-Seam Fastball, Curveball, Sweeper and Sinker, and a little else. The 4-seam fastball is 39.8% of everything he throws.
990 classified pitches in 2026.
He lives on one side of the plate
Rolison works away from right-handers: his average pitch lands 1.5 inches to that side of the middle of the plate.
987 located pitches in 2026.
He throws strikes to one type of hitter and not the other
Rolison lands 50.6% of his breaking balls in the zone and only 41.5% of his fastballs.
86 of his breaking balls, 84 of his fastballs.
His fastball is the pitch everything else is built on
Rolison's 4-seam fastball averages 94.7 mph, and has touched 97.4.
394 thrown, 39.8% of his pitches.
He lives on the edges rather than over the middle
18.4% of Rolison's pitches land in the middle third of the zone, well below what most pitchers give away.
182 of 987 located pitches.
He falls behind hitters far too often
Rolison throws a strike on the first pitch 58.2% of the time.
256 plate appearances started in 2026.
He gets so far down the mound the ball arrives early
Rolison releases the ball 6.5 feet down the mound, so the ball arrives sooner than the radar gun suggests.
944 tracked pitches in 2026.
One pitch exists only to make the hitter think
Rolison has thrown 14 changeups this season, 1.4% of his pitches, at 90.9 mph: a look rather than a weapon.
990 classified pitches in 2026.
Show more
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 .437 expected average against them, against .263 on his fastballs.
86 of his breaking balls thrown.
He throws strikes to one type of hitter and not the other
Rolison lands 50.6% of his breaking balls in the zone and only 41.5% of his fastballs.
86 of his breaking balls, 84 of his fastballs.
The numbers behind these live in Pitch Data.
Take me there
There is one pitch of his that keeps getting hit
Contact off Rolison's curveball leaves the bat at 91.7 mph, against 82.5 off his sinker.
162 and 142 of them thrown.
He saves one pitch for one side of the plate
Rolison throws the curveball 28.9% of the time against right-handers and 2.2% against left-handers.
526 pitches to right-handers, 464 to left-handers.
The gap between his pitches is what makes them work
15.5 mph separates Rolison's sinker from his curveball, 95.0 against 79.5.
142 and 162 of them respectively.
One pitch of his spins more than almost anyone's
Rolison's curveball spins at 2,668 rpm, the highest in his arsenal.
162 thrown in 2026.
His pitches move in ways that fit together
Rolison works with 5 pitches: 4-Seam Fastball, Curveball, Sweeper and Sinker, and a little else. The 4-seam fastball is 39.8% of everything he throws.
990 classified pitches in 2026.
His fastball is the pitch everything else is built on
Rolison's 4-seam fastball averages 94.7 mph, and has touched 97.4.
394 thrown, 39.8% of his pitches.
One pitch exists only to make the hitter think
Rolison has thrown 14 changeups this season, 1.4% of his pitches, at 90.9 mph: a look rather than a weapon.
990 classified pitches in 2026.
Show more
The numbers behind these live in Pitch Data.
Take me there
One pitch of his moves in a way hitters rarely see
Rolison's curveball carries 14.2 inches of drop against a spinless ball, the biggest vertical move in his arsenal.
162 thrown, averaging 79.5 mph.
One pitch of his runs sideways more than almost anyone's
Rolison's sweeper moves 13.6 inches toward the third-base side, the biggest horizontal move in his arsenal.
149 thrown, averaging 85.1 mph.
The numbers behind these live in Pitch Data.
Take me there
He fills the strike zone and makes hitters beat him
Rolison lives in the strike zone: 46.5% of his pitches are in it, 84th percentile.
175 pitches in 2026. 84th percentile among qualified pitchers in 2026, 86th 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 Rolison goes to the sweeper: 22.7% of his two-strike pitches, against 12.2% the rest of the time.
269 two-strike pitches in 2026.
When he falls behind, hitters know exactly what is coming
Behind in the count Rolison throws a fastball 63.5% of the time, against 48.4% when he is ahead.
288 pitches behind in the count, 256 ahead.
How much of the zone he uses depends on the count
Rolison puts 57.6% of his pitches in the zone when he is behind and 42% when he is ahead.
288 located pitches behind, 255 ahead.
He falls behind hitters far too often
Rolison throws a strike on the first pitch 58.2% of the time.
256 plate appearances started 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
Rolison lives at the bottom of the zone: his average pitch crosses at 2.22 feet, against a zone that runs 1.5 to 3.5.
987 located pitches in 2026.
He lives on one side of the plate
Rolison works away from right-handers: his average pitch lands 1.5 inches to that side of the middle of the plate.
987 located pitches in 2026.
He lives on the edges rather than over the middle
18.4% of Rolison's pitches land in the middle third of the zone, well below what most pitchers give away.
182 of 987 located pitches.
The numbers behind these live in Spray Chart.
Take me there
The contact he allows is the kind that finds grass
The quality of contact against Rolison projects a .365 average, 17th percentile.
175 pitches in 2026. 17th percentile among qualified pitchers in 2026, 445th in MLB.
The numbers behind these live in Pitch Data.
Take me there
His ball moves more than the hitter expects it to
Rolison's stuff spins at 2,412 rpm, 78th percentile in the league.
175 pitches in 2026. 78th percentile among qualified pitchers in 2026, 118th in MLB.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Rolison releases the ball from a low three-quarters slot, about 43 degrees above horizontal and 1.6 feet to the first-base side of the rubber.
987 tracked release points, averaging 5.8 feet off the ground.
He gets so far down the mound the ball arrives early
Rolison releases the ball 6.5 feet down the mound, so the ball arrives sooner than the radar gun suggests.
944 tracked pitches in 2026.
The numbers behind these live in Pitch Data.
Take me there
He gets by without much velocity, and it costs him
Rolison averages 88.8 mph across his arsenal, 36th percentile in the league.
175 pitches in 2026. 36th percentile among qualified pitchers in 2026, 345th in MLB.
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