He pitches differently depending on which hand is up
Klein puts 55.7% of his pitches to right-handers in the zone and 44.4% of his pitches to left-handers.
131 pitches to right-handed hitters, 171 to left-handed hitters.
His fastball is the pitch everything else is built on
Klein's 4-seam fastball averages 97.5 mph, and has touched 100.8.
388 thrown, 50.9% of his pitches.
He fills the strike zone and makes hitters beat him
Klein lives in the strike zone: 49.3% of his pitches are in it, 94th percentile.
302 pitches in 2026. 94th percentile among qualified pitchers in 2026, 34th in MLB.
One pitch of his moves in a way hitters rarely see
Klein's 4-seam fastball carries 15.2 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
388 thrown, averaging 97.5 mph.
He saves one pitch for one side of the plate
Klein throws the sweeper 46.3% of the time against right-handers and 12.5% against left-handers.
361 pitches to right-handers, 401 to left-handers.
He throws about as hard as anybody in the league
Klein averages 92.5 mph across his arsenal, 87th percentile in the league.
302 pitches in 2026. 87th percentile among qualified pitchers in 2026, 69th in MLB.
This is the pitch he goes to when he needs the out
With two strikes Klein goes to the sweeper: 36.7% of his two-strike pitches, against 25.1% the rest of the time.
221 two-strike pitches in 2026.
The angle he throws from is unusual, and hitters notice
Klein releases the ball from a low three-quarters slot, about 33 degrees above horizontal and 1.5 feet to the third-base side of the rubber.
762 tracked release points, averaging 5.5 feet off the ground.
There is one pitch of his that keeps getting hit
Contact off Klein's 4-seam fastball leaves the bat at 90.8 mph, against 84.4 off his sweeper.
388 and 217 of them thrown.
One pitch of his runs sideways more than almost anyone's
Klein's sweeper moves 13.0 inches toward the first-base side, the biggest horizontal move in his arsenal.
217 thrown, averaging 88.6 mph.
He lives on one side of the plate
Klein works in on right-handers: his average pitch lands 2.7 inches to that side of the middle of the plate.
762 located pitches in 2026.
His pitches move in ways that fit together
Klein works with 3 pitches: 4-Seam Fastball, Sweeper and Curveball. The 4-seam fastball is 50.9% of everything he throws.
762 classified pitches in 2026.
How much of the zone he uses depends on the count
Klein puts 58.6% of his pitches in the zone when he is behind and 43.5% when he is ahead.
222 located pitches behind, 214 ahead.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .360 expected average against them, against .321 on his breaking balls.
151 of his fastballs thrown.
He gets so far down the mound the ball arrives early
Klein releases the ball 6.8 feet down the mound, so the ball arrives sooner than the radar gun suggests.
697 tracked pitches in 2026.
He pitches around the zone once runners are on
Klein throws 47.3% of his pitches in the zone with a runner in scoring position and 50.2% with the bases empty.
93 pitches with a runner in scoring position, 209 with the bases empty.
The gap between his pitches is what makes them work
12.5 mph separates Klein's 4-seam fastball from his curveball, 97.5 against 85.0.
388 and 121 of them respectively.
When he falls behind, hitters know exactly what is coming
Behind in the count Klein throws a fastball 54.1% of the time, against 47.2% when he is ahead.
222 pitches behind in the count, 214 ahead.
Almost nothing hit off him is hit well
Only 36% of the contact Klein gives up is hit hard, 67th percentile.
302 pitches in 2026. 67th percentile among qualified pitchers in 2026, 180th in MLB.
One pitch of his spins more than almost anyone's
Klein's sweeper spins at 2,515 rpm, the highest in his arsenal.
217 thrown in 2026.
The contact he allows is the kind that finds grass
The quality of contact against Klein projects a .340 average, 36th percentile.
302 pitches in 2026. 36th percentile among qualified pitchers in 2026, 345th in MLB.
When hitters connect off him, they hit it hard
Hitters average 89.2 mph off the bat against Klein, 38th percentile.
302 pitches in 2026. 38th percentile among qualified pitchers in 2026, 333rd in MLB.
One pitch exists only to make the hitter think
Klein has thrown 36 sliders this season, 4.7% of his pitches, at 91.2 mph: a look rather than a weapon.
762 classified pitches 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
Klein puts 55.7% of his pitches to right-handers in the zone and 44.4% of his pitches to left-handers.
131 pitches to right-handed hitters, 171 to left-handed hitters.
The numbers behind these live in Pitch Data.
Take me there
His fastball is the pitch everything else is built on
Klein's 4-seam fastball averages 97.5 mph, and has touched 100.8.
388 thrown, 50.9% of his pitches.
He saves one pitch for one side of the plate
Klein throws the sweeper 46.3% of the time against right-handers and 12.5% against left-handers.
361 pitches to right-handers, 401 to left-handers.
There is one pitch of his that keeps getting hit
Contact off Klein's 4-seam fastball leaves the bat at 90.8 mph, against 84.4 off his sweeper.
388 and 217 of them thrown.
His pitches move in ways that fit together
Klein works with 3 pitches: 4-Seam Fastball, Sweeper and Curveball. The 4-seam fastball is 50.9% of everything he throws.
762 classified pitches in 2026.
The gap between his pitches is what makes them work
12.5 mph separates Klein's 4-seam fastball from his curveball, 97.5 against 85.0.
388 and 121 of them respectively.
One pitch of his spins more than almost anyone's
Klein's sweeper spins at 2,515 rpm, the highest in his arsenal.
217 thrown in 2026.
One pitch exists only to make the hitter think
Klein has thrown 36 sliders this season, 4.7% of his pitches, at 91.2 mph: a look rather than a weapon.
762 classified pitches in 2026.
Show more
The numbers behind these live in Pitch Data.
Take me there
He fills the strike zone and makes hitters beat him
Klein lives in the strike zone: 49.3% of his pitches are in it, 94th percentile.
302 pitches in 2026. 94th percentile among qualified pitchers in 2026, 34th in MLB.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his moves in a way hitters rarely see
Klein's 4-seam fastball carries 15.2 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
388 thrown, averaging 97.5 mph.
One pitch of his runs sideways more than almost anyone's
Klein's sweeper moves 13.0 inches toward the first-base side, the biggest horizontal move in his arsenal.
217 thrown, averaging 88.6 mph.
The numbers behind these live in Pitch Data.
Take me there
He throws about as hard as anybody in the league
Klein averages 92.5 mph across his arsenal, 87th percentile in the league.
302 pitches in 2026. 87th percentile among qualified pitchers in 2026, 69th 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 Klein goes to the sweeper: 36.7% of his two-strike pitches, against 25.1% the rest of the time.
221 two-strike pitches in 2026.
How much of the zone he uses depends on the count
Klein puts 58.6% of his pitches in the zone when he is behind and 43.5% when he is ahead.
222 located pitches behind, 214 ahead.
When he falls behind, hitters know exactly what is coming
Behind in the count Klein throws a fastball 54.1% of the time, against 47.2% when he is ahead.
222 pitches behind in the count, 214 ahead.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Klein releases the ball from a low three-quarters slot, about 33 degrees above horizontal and 1.5 feet to the third-base side of the rubber.
762 tracked release points, averaging 5.5 feet off the ground.
He gets so far down the mound the ball arrives early
Klein releases the ball 6.8 feet down the mound, so the ball arrives sooner than the radar gun suggests.
697 tracked pitches in 2026.
The numbers behind these live in Pitch Data.
Take me there
He lives on one side of the plate
Klein works in on right-handers: his average pitch lands 2.7 inches to that side of the middle of the plate.
762 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 fastballs: a .360 expected average against them, against .321 on his breaking balls.
151 of his fastballs thrown.
The numbers behind these live in Matchups.
Take me there
He pitches around the zone once runners are on
Klein throws 47.3% of his pitches in the zone with a runner in scoring position and 50.2% with the bases empty.
93 pitches with a runner in scoring position, 209 with the bases empty.
The numbers behind these live in Spray Chart.
Take me there
Almost nothing hit off him is hit well
Only 36% of the contact Klein gives up is hit hard, 67th percentile.
302 pitches in 2026. 67th percentile among qualified pitchers in 2026, 180th in MLB.
The contact he allows is the kind that finds grass
The quality of contact against Klein projects a .340 average, 36th percentile.
302 pitches in 2026. 36th percentile among qualified pitchers in 2026, 345th in MLB.
When hitters connect off him, they hit it hard
Hitters average 89.2 mph off the bat against Klein, 38th percentile.
302 pitches in 2026. 38th percentile among qualified pitchers in 2026, 333rd in MLB.