He handles both hands about the same
Right-handed hitters project to a .286 average against Keller and left-handers to .378.
292 pitches to right-handed hitters, 488 to left-handed hitters.
There is one pitch of his that keeps getting hit
Contact off Keller's sinker leaves the bat at 94.2 mph, against 81.7 off his cutter.
314 and 134 of them thrown.
Runners on base do not change how he is hit
30.3% of the contact against Keller with a runner in scoring position is hit hard, against 42.3% with the bases empty.
150 pitches with a runner in scoring position, 630 with the bases empty.
Hitters cannot square him up, the contact is weak
Contact against Keller is weak: 86.2 mph off the bat on average, 79th percentile.
780 pitches in 2026. 79th percentile among qualified pitchers in 2026, 111th in MLB.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .353 expected average against them, against .301 on his breaking balls.
444 of his fastballs thrown.
The shape of the contact off him says how he gets outs
41.8% of the contact against Keller is on the ground and 33.1% of it is in the air.
359 tracked batted balls allowed.
The contact he allows is the kind that finds grass
The quality of contact against Keller projects a .346 average, 31st percentile.
780 pitches in 2026. 31st percentile among qualified pitchers in 2026, 369th in MLB.
Hitters tend to hit him to one part of the field
43.3% of the balls put in play against Keller have gone to centre field.
157 of 363 located batted balls allowed.
His ball moves more than the hitter expects it to
Keller's stuff spins at 2,357 rpm, 67th percentile in the league.
780 pitches in 2026. 67th percentile among qualified pitchers in 2026, 177th in MLB.
He fills the strike zone and makes hitters beat him
Keller lives in the strike zone: 44.1% of his pitches are in it, 63rd percentile.
780 pitches in 2026. 63rd percentile among qualified pitchers in 2026, 197th in MLB.
He gets by without much velocity, and it costs him
Keller averages 89.0 mph across his arsenal, 39th percentile in the league.
780 pitches in 2026. 39th percentile among qualified pitchers in 2026, 329th in MLB.
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The numbers behind these live in Matchups.
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He handles both hands about the same
Right-handed hitters project to a .286 average against Keller and left-handers to .378.
292 pitches to right-handed hitters, 488 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 Keller's sinker leaves the bat at 94.2 mph, against 81.7 off his cutter.
314 and 134 of them thrown.
The numbers behind these live in Matchups.
Take me there
Runners on base do not change how he is hit
30.3% of the contact against Keller with a runner in scoring position is hit hard, against 42.3% with the bases empty.
150 pitches with a runner in scoring position, 630 with the bases empty.
The numbers behind these live in Spray Chart.
Take me there
Hitters cannot square him up, the contact is weak
Contact against Keller is weak: 86.2 mph off the bat on average, 79th percentile.
780 pitches in 2026. 79th percentile among qualified pitchers in 2026, 111th in MLB.
The contact he allows is the kind that finds grass
The quality of contact against Keller projects a .346 average, 31st percentile.
780 pitches in 2026. 31st percentile among qualified pitchers in 2026, 369th in MLB.
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 .353 expected average against them, against .301 on his breaking balls.
444 of his fastballs thrown.
The numbers behind these live in Pitch Data.
Take me there
The shape of the contact off him says how he gets outs
41.8% of the contact against Keller is on the ground and 33.1% of it is in the air.
359 tracked batted balls allowed.
Hitters tend to hit him to one part of the field
43.3% of the balls put in play against Keller have gone to centre field.
157 of 363 located batted balls allowed.
The numbers behind these live in Pitch Data.
Take me there
His ball moves more than the hitter expects it to
Keller's stuff spins at 2,357 rpm, 67th percentile in the league.
780 pitches in 2026. 67th percentile among qualified pitchers in 2026, 177th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He fills the strike zone and makes hitters beat him
Keller lives in the strike zone: 44.1% of his pitches are in it, 63rd percentile.
780 pitches in 2026. 63rd percentile among qualified pitchers in 2026, 197th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He gets by without much velocity, and it costs him
Keller averages 89.0 mph across his arsenal, 39th percentile in the league.
780 pitches in 2026. 39th percentile among qualified pitchers in 2026, 329th in MLB.
Pirates
Career team 2019 to 2026