One pitch of his runs sideways more than almost anyone's
Duffy's changeup moves 83.1 inches toward the third-base side, the biggest horizontal move in his arsenal.
158 thrown, averaging 85.3 mph.
When he falls behind, hitters know exactly what is coming
Behind in the count Duffy throws a fastball 69.8% of the time, against 43.9% when he is ahead.
305 pitches behind in the count, 303 ahead.
One type of hitter does all the damage against him
Hitters do their damage on his breaking balls: a .434 expected average against them, against .326 on his offspeed pitches.
313 of his breaking balls thrown.
There is one pitch of his that keeps getting hit
Contact off Duffy's sinker leaves the bat at 95.5 mph, against 86.2 off his changeup.
146 and 158 of them thrown.
The angle he throws from is unusual, and hitters notice
Duffy releases the ball from over the top, about 75 degrees above horizontal and 0.4 feet to the first-base side of the rubber.
1071 tracked release points, averaging 5.8 feet off the ground.
One pitch of his moves in a way hitters rarely see
Duffy's 4-seam fastball carries 17.4 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
452 thrown, averaging 93.7 mph.
The gap between his pitches is what makes them work
16.5 mph separates Duffy's 4-seam fastball from his curveball, 93.7 against 77.2.
452 and 115 of them respectively.
He pitches differently depending on which hand is up
Duffy puts 42.6% of his pitches to right-handers in the zone and 47.3% of his pitches to left-handers.
847 pitches to right-handed hitters, 224 to left-handed hitters.
This is the pitch he goes to when he needs the out
With two strikes Duffy goes to the slider: 24% of his two-strike pitches, against 16.1% the rest of the time.
325 two-strike pitches in 2021.
He saves one pitch for one side of the plate
Duffy throws the slider 33.5% of the time against left-handers and 14.5% against right-handers.
847 pitches to right-handers, 224 to left-handers.
The contact he allows is the kind that finds grass
The quality of contact against Duffy projects a .358 average, 21st percentile.
1071 pitches in 2021. 21st percentile among qualified pitchers in 2021, 634th in MLB.
His velocity drains away as the outing goes on
Duffy's fastball averages 94.1 mph in his first 25 pitches of a start and 93.3 past his 75th.
257 early fastballs, 78 late ones.
His pitches move in ways that fit together
Duffy works with 5 pitches: 4-Seam Fastball, Slider, Changeup and Sinker, and a little else. The 4-seam fastball is 42.2% of everything he throws.
1071 classified pitches in 2021.
He cannot find the zone often enough
Duffy works off the plate, with only 43.6% of his pitches in the zone, 34th percentile.
1071 pitches in 2021. 34th percentile among qualified pitchers in 2021, 530th in MLB.
He lives on the edges rather than over the middle
17.6% of Duffy's pitches land in the middle third of the zone, well below what most pitchers give away.
189 of 1071 located pitches.
How much of the zone he uses depends on the count
Duffy puts 53.4% of his pitches in the zone when he is behind and 39.3% when he is ahead.
305 located pitches behind, 303 ahead.
His ball moves more than the hitter expects it to
Duffy's stuff spins at 2,334 rpm, 70th percentile in the league.
1071 pitches in 2021. 70th percentile among qualified pitchers in 2021, 241st in MLB.
He throws strikes to one type of hitter and not the other
Duffy lands 47.8% of his fastballs in the zone and only 36.7% of his breaking balls.
600 of his fastballs, 313 of his breaking balls.
When hitters connect off him, they hit it hard
Hitters average 89.5 mph off the bat against Duffy, 31st percentile.
1071 pitches in 2021. 31st percentile among qualified pitchers in 2021, 555th in MLB.
One pitch of his spins more than almost anyone's
Duffy's slider spins at 2,505 rpm, the highest in his arsenal.
198 thrown in 2021.
He falls behind hitters far too often
Duffy throws a strike on the first pitch 57.3% of the time.
253 plate appearances started in 2021.
He gets so far down the mound the ball arrives early
Duffy releases the ball 6.6 feet down the mound, so the ball arrives sooner than the radar gun suggests.
1071 tracked pitches in 2021.
His fastball is the pitch everything else is built on
Duffy's 4-seam fastball averages 93.7 mph, and has touched 97.3.
452 thrown, 42.2% of his pitches.
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The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Duffy's changeup moves 83.1 inches toward the third-base side, the biggest horizontal move in his arsenal.
158 thrown, averaging 85.3 mph.
One pitch of his moves in a way hitters rarely see
Duffy's 4-seam fastball carries 17.4 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
452 thrown, averaging 93.7 mph.
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 Duffy throws a fastball 69.8% of the time, against 43.9% when he is ahead.
305 pitches behind in the count, 303 ahead.
This is the pitch he goes to when he needs the out
With two strikes Duffy goes to the slider: 24% of his two-strike pitches, against 16.1% the rest of the time.
325 two-strike pitches in 2021.
How much of the zone he uses depends on the count
Duffy puts 53.4% of his pitches in the zone when he is behind and 39.3% when he is ahead.
305 located pitches behind, 303 ahead.
He falls behind hitters far too often
Duffy throws a strike on the first pitch 57.3% of the time.
253 plate appearances started in 2021.
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 .434 expected average against them, against .326 on his offspeed pitches.
313 of his breaking balls thrown.
He throws strikes to one type of hitter and not the other
Duffy lands 47.8% of his fastballs in the zone and only 36.7% of his breaking balls.
600 of his fastballs, 313 of his breaking balls.
The numbers behind these live in Pitch Data.
Take me there
There is one pitch of his that keeps getting hit
Contact off Duffy's sinker leaves the bat at 95.5 mph, against 86.2 off his changeup.
146 and 158 of them thrown.
The gap between his pitches is what makes them work
16.5 mph separates Duffy's 4-seam fastball from his curveball, 93.7 against 77.2.
452 and 115 of them respectively.
He saves one pitch for one side of the plate
Duffy throws the slider 33.5% of the time against left-handers and 14.5% against right-handers.
847 pitches to right-handers, 224 to left-handers.
His pitches move in ways that fit together
Duffy works with 5 pitches: 4-Seam Fastball, Slider, Changeup and Sinker, and a little else. The 4-seam fastball is 42.2% of everything he throws.
1071 classified pitches in 2021.
One pitch of his spins more than almost anyone's
Duffy's slider spins at 2,505 rpm, the highest in his arsenal.
198 thrown in 2021.
His fastball is the pitch everything else is built on
Duffy's 4-seam fastball averages 93.7 mph, and has touched 97.3.
452 thrown, 42.2% of his pitches.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Duffy releases the ball from over the top, about 75 degrees above horizontal and 0.4 feet to the first-base side of the rubber.
1071 tracked release points, averaging 5.8 feet off the ground.
His velocity drains away as the outing goes on
Duffy's fastball averages 94.1 mph in his first 25 pitches of a start and 93.3 past his 75th.
257 early fastballs, 78 late ones.
He gets so far down the mound the ball arrives early
Duffy releases the ball 6.6 feet down the mound, so the ball arrives sooner than the radar gun suggests.
1071 tracked pitches in 2021.
The numbers behind these live in Matchups.
Take me there
He pitches differently depending on which hand is up
Duffy puts 42.6% of his pitches to right-handers in the zone and 47.3% of his pitches to left-handers.
847 pitches to right-handed hitters, 224 to left-handed hitters.
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 Duffy projects a .358 average, 21st percentile.
1071 pitches in 2021. 21st percentile among qualified pitchers in 2021, 634th in MLB.
When hitters connect off him, they hit it hard
Hitters average 89.5 mph off the bat against Duffy, 31st percentile.
1071 pitches in 2021. 31st percentile among qualified pitchers in 2021, 555th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He cannot find the zone often enough
Duffy works off the plate, with only 43.6% of his pitches in the zone, 34th percentile.
1071 pitches in 2021. 34th percentile among qualified pitchers in 2021, 530th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He lives on the edges rather than over the middle
17.6% of Duffy's pitches land in the middle third of the zone, well below what most pitchers give away.
189 of 1071 located pitches.
The numbers behind these live in Pitch Data.
Take me there
His ball moves more than the hitter expects it to
Duffy's stuff spins at 2,334 rpm, 70th percentile in the league.
1071 pitches in 2021. 70th percentile among qualified pitchers in 2021, 241st in MLB.
Royals
Career team 2011–2021