His fastball is the pitch everything else is built on
Kopech's 4-seam fastball averages 97.5 mph, and has touched 101.0.
191 thrown, 82.7% of his pitches.
One pitch of his runs sideways more than almost anyone's
Kopech's 4-seam fastball moves 62.7 inches toward the first-base side, the biggest horizontal move in his arsenal.
191 thrown, averaging 97.5 mph.
He throws about as hard as anybody in the league
Kopech averages 96.4 mph across his arsenal, 99th percentile in the league.
231 pitches in 2025. 99th percentile among qualified pitchers in 2025, 6th in MLB.
One pitch of his moves in a way hitters rarely see
Kopech's 4-seam fastball carries 18.1 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
191 thrown, averaging 97.5 mph.
His ball moves more than the hitter expects it to
Kopech's stuff spins at 2,611 rpm, 95th percentile in the league.
231 pitches in 2025. 95th percentile among qualified pitchers in 2025, 42nd in MLB.
His pitches move in ways that fit together
Kopech works with 2 pitches: 4-Seam Fastball and Cutter. The 4-seam fastball is 82.7% of everything he throws.
231 classified pitches in 2025.
This is the pitch he goes to when he needs the out
With two strikes Kopech goes to the cutter: 23.3% of his two-strike pitches, against 13.3% the rest of the time.
73 two-strike pitches in 2025.
The angle he throws from is unusual, and hitters notice
Kopech releases the ball from a low three-quarters slot, about 35 degrees above horizontal and 1.9 feet to the third-base side of the rubber.
231 tracked release points, averaging 5.7 feet off the ground.
He works one part of the zone far more than the rest
Kopech lives up in the zone: his average pitch crosses at 2.75 feet, against a zone that runs 1.5 to 3.5.
231 located pitches in 2025.
He falls behind hitters far too often
Kopech throws a strike on the first pitch 54.7% of the time.
53 plate appearances started in 2025.
One pitch of his spins more than almost anyone's
Kopech's 4-seam fastball spins at 2,624 rpm, the highest in his arsenal.
191 thrown in 2025.
He pitches differently depending on which hand is up
Kopech puts 45.2% of his pitches to right-handers in the zone and 48.6% of his pitches to left-handers.
124 pitches to right-handed hitters, 107 to left-handed hitters.
He gets so far down the mound the ball arrives early
Kopech releases the ball 6.8 feet down the mound, so the ball arrives sooner than the radar gun suggests.
231 tracked pitches in 2025.
He lives on the edges rather than over the middle
17.3% of Kopech's pitches land in the middle third of the zone, well below what most pitchers give away.
40 of 231 located pitches.
The contact he allows should not turn into many hits
The quality of contact against Kopech projects a .320 average, 69th percentile.
231 pitches in 2025. 69th percentile among qualified pitchers in 2025, 246th in MLB.
He saves one pitch for one side of the plate
Kopech throws the cutter 21.8% of the time against right-handers and 10.3% against left-handers.
124 pitches to right-handers, 107 to left-handers.
Almost nothing hit off him is hit well
Only 39.3% of the contact Kopech gives up is hit hard, 62nd percentile.
231 pitches in 2025. 62nd percentile among qualified pitchers in 2025, 298th in MLB.
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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
Kopech's 4-seam fastball averages 97.5 mph, and has touched 101.0.
191 thrown, 82.7% of his pitches.
His pitches move in ways that fit together
Kopech works with 2 pitches: 4-Seam Fastball and Cutter. The 4-seam fastball is 82.7% of everything he throws.
231 classified pitches in 2025.
One pitch of his spins more than almost anyone's
Kopech's 4-seam fastball spins at 2,624 rpm, the highest in his arsenal.
191 thrown in 2025.
He saves one pitch for one side of the plate
Kopech throws the cutter 21.8% of the time against right-handers and 10.3% against left-handers.
124 pitches to right-handers, 107 to left-handers.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Kopech's 4-seam fastball moves 62.7 inches toward the first-base side, the biggest horizontal move in his arsenal.
191 thrown, averaging 97.5 mph.
One pitch of his moves in a way hitters rarely see
Kopech's 4-seam fastball carries 18.1 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
191 thrown, averaging 97.5 mph.
The numbers behind these live in Pitch Data.
Take me there
He throws about as hard as anybody in the league
Kopech averages 96.4 mph across his arsenal, 99th percentile in the league.
231 pitches in 2025. 99th percentile among qualified pitchers in 2025, 6th in MLB.
The numbers behind these live in Pitch Data.
Take me there
His ball moves more than the hitter expects it to
Kopech's stuff spins at 2,611 rpm, 95th percentile in the league.
231 pitches in 2025. 95th percentile among qualified pitchers in 2025, 42nd 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 Kopech goes to the cutter: 23.3% of his two-strike pitches, against 13.3% the rest of the time.
73 two-strike pitches in 2025.
He falls behind hitters far too often
Kopech throws a strike on the first pitch 54.7% of the time.
53 plate appearances started in 2025.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Kopech releases the ball from a low three-quarters slot, about 35 degrees above horizontal and 1.9 feet to the third-base side of the rubber.
231 tracked release points, averaging 5.7 feet off the ground.
He gets so far down the mound the ball arrives early
Kopech releases the ball 6.8 feet down the mound, so the ball arrives sooner than the radar gun suggests.
231 tracked pitches in 2025.
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Kopech lives up in the zone: his average pitch crosses at 2.75 feet, against a zone that runs 1.5 to 3.5.
231 located pitches in 2025.
He lives on the edges rather than over the middle
17.3% of Kopech's pitches land in the middle third of the zone, well below what most pitchers give away.
40 of 231 located pitches.
The numbers behind these live in Matchups.
Take me there
He pitches differently depending on which hand is up
Kopech puts 45.2% of his pitches to right-handers in the zone and 48.6% of his pitches to left-handers.
124 pitches to right-handed hitters, 107 to left-handed hitters.
The numbers behind these live in Spray Chart.
Take me there
The contact he allows should not turn into many hits
The quality of contact against Kopech projects a .320 average, 69th percentile.
231 pitches in 2025. 69th percentile among qualified pitchers in 2025, 246th in MLB.
Almost nothing hit off him is hit well
Only 39.3% of the contact Kopech gives up is hit hard, 62nd percentile.
231 pitches in 2025. 62nd percentile among qualified pitchers in 2025, 298th in MLB.
White Sox
Career team 2018–2024