When he falls behind, hitters know exactly what is coming
Behind in the count Duffey throws a fastball 57.6% of the time, against 30.6% when he is ahead.
59 pitches behind in the count, 49 ahead.
One pitch of his runs sideways more than almost anyone's
Duffey's knuckle curve moves 59.8 inches toward the third-base side, the biggest horizontal move in his arsenal.
57 thrown, averaging 80.7 mph.
His fastball is the pitch everything else is built on
Duffey's 4-seam fastball averages 90.8 mph, and has touched 93.3.
53 thrown, 28% of his pitches.
He gets by without much velocity, and it costs him
Duffey averages 85.5 mph across his arsenal, 10th percentile in the league.
189 pitches in 2024. 10th percentile among qualified pitchers in 2024, 691st in MLB.
The angle he throws from is unusual, and hitters notice
Duffey releases the ball from a low three-quarters slot, about 28 degrees above horizontal and 2.4 feet to the third-base side of the rubber.
189 tracked release points, averaging 5.6 feet off the ground.
Too much of the contact against him is loud
52.2% of the contact Duffey gives up is hit hard, 4th percentile.
189 pitches in 2024. 4th percentile among qualified pitchers in 2024, 740th in MLB.
He works one part of the zone far more than the rest
Duffey lives at the bottom of the zone: his average pitch crosses at 2.15 feet, against a zone that runs 1.5 to 3.5.
189 located pitches in 2024.
How much of the zone he uses depends on the count
Duffey puts 52.5% of his pitches in the zone when he is behind and 26.5% when he is ahead.
59 located pitches behind, 49 ahead.
He saves one pitch for one side of the plate
Duffey throws the slider 26.9% of the time against right-handers and 4.9% against left-handers.
108 pitches to right-handers, 81 to left-handers.
He cannot find the zone often enough
Duffey works off the plate, with only 42.9% of his pitches in the zone, 22nd percentile.
189 pitches in 2024. 22nd percentile among qualified pitchers in 2024, 603rd in MLB.
He throws strikes to one type of hitter and not the other
Duffey lands 53.6% of his fastballs in the zone and only 35.6% of his breaking balls.
84 of his fastballs, 90 of his breaking balls.
One pitch of his moves in a way hitters rarely see
Duffey's 4-seam fastball carries 13.1 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
53 thrown, averaging 90.8 mph.
He falls behind hitters far too often
Duffey throws a strike on the first pitch 52.4% of the time.
42 plate appearances started in 2024.
His pitches move in ways that fit together
Duffey works with 5 pitches: Knuckle Curve, 4-Seam Fastball, Slider and Sinker, and a little else. The knuckle curve is 30.2% of everything he throws.
189 classified pitches in 2024.
This is the pitch he goes to when he needs the out
With two strikes Duffey goes to the knuckle curve: 36.8% of his two-strike pitches, against 27.3% the rest of the time.
57 two-strike pitches in 2024.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .339 expected average against them, against .296 on his breaking balls.
84 of his fastballs thrown.
His ball moves more than the hitter expects it to
Duffey's stuff spins at 2,370 rpm, 71st percentile in the league.
189 pitches in 2024. 71st percentile among qualified pitchers in 2024, 222nd in MLB.
He lives on the edges rather than over the middle
17.5% of Duffey's pitches land in the middle third of the zone, well below what most pitchers give away.
33 of 189 located pitches.
One pitch of his spins more than almost anyone's
Duffey's knuckle curve spins at 2,535 rpm, the highest in his arsenal.
57 thrown in 2024.
The gap between his pitches is what makes them work
10.1 mph separates Duffey's 4-seam fastball from his knuckle curve, 90.8 against 80.7.
53 and 57 of them respectively.
When hitters connect off him, they hit it hard
Hitters average 89.1 mph off the bat against Duffey, 37th percentile.
189 pitches in 2024. 37th percentile among qualified pitchers in 2024, 487th in MLB.
The contact he allows should not turn into many hits
The quality of contact against Duffey projects a .316 average, 62nd percentile.
189 pitches in 2024. 62nd percentile among qualified pitchers in 2024, 289th in MLB.
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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 Duffey throws a fastball 57.6% of the time, against 30.6% when he is ahead.
59 pitches behind in the count, 49 ahead.
How much of the zone he uses depends on the count
Duffey puts 52.5% of his pitches in the zone when he is behind and 26.5% when he is ahead.
59 located pitches behind, 49 ahead.
He falls behind hitters far too often
Duffey throws a strike on the first pitch 52.4% of the time.
42 plate appearances started in 2024.
This is the pitch he goes to when he needs the out
With two strikes Duffey goes to the knuckle curve: 36.8% of his two-strike pitches, against 27.3% the rest of the time.
57 two-strike pitches in 2024.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Duffey's knuckle curve moves 59.8 inches toward the third-base side, the biggest horizontal move in his arsenal.
57 thrown, averaging 80.7 mph.
One pitch of his moves in a way hitters rarely see
Duffey's 4-seam fastball carries 13.1 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
53 thrown, averaging 90.8 mph.
The numbers behind these live in Pitch Data.
Take me there
His fastball is the pitch everything else is built on
Duffey's 4-seam fastball averages 90.8 mph, and has touched 93.3.
53 thrown, 28% of his pitches.
He saves one pitch for one side of the plate
Duffey throws the slider 26.9% of the time against right-handers and 4.9% against left-handers.
108 pitches to right-handers, 81 to left-handers.
His pitches move in ways that fit together
Duffey works with 5 pitches: Knuckle Curve, 4-Seam Fastball, Slider and Sinker, and a little else. The knuckle curve is 30.2% of everything he throws.
189 classified pitches in 2024.
One pitch of his spins more than almost anyone's
Duffey's knuckle curve spins at 2,535 rpm, the highest in his arsenal.
57 thrown in 2024.
The gap between his pitches is what makes them work
10.1 mph separates Duffey's 4-seam fastball from his knuckle curve, 90.8 against 80.7.
53 and 57 of them respectively.
The numbers behind these live in Pitch Data.
Take me there
He gets by without much velocity, and it costs him
Duffey averages 85.5 mph across his arsenal, 10th percentile in the league.
189 pitches in 2024. 10th percentile among qualified pitchers in 2024, 691st in MLB.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Duffey releases the ball from a low three-quarters slot, about 28 degrees above horizontal and 2.4 feet to the third-base side of the rubber.
189 tracked release points, averaging 5.6 feet off the ground.
The numbers behind these live in Spray Chart.
Take me there
Too much of the contact against him is loud
52.2% of the contact Duffey gives up is hit hard, 4th percentile.
189 pitches in 2024. 4th percentile among qualified pitchers in 2024, 740th in MLB.
When hitters connect off him, they hit it hard
Hitters average 89.1 mph off the bat against Duffey, 37th percentile.
189 pitches in 2024. 37th percentile among qualified pitchers in 2024, 487th in MLB.
The contact he allows should not turn into many hits
The quality of contact against Duffey projects a .316 average, 62nd percentile.
189 pitches in 2024. 62nd percentile among qualified pitchers in 2024, 289th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Duffey lives at the bottom of the zone: his average pitch crosses at 2.15 feet, against a zone that runs 1.5 to 3.5.
189 located pitches in 2024.
He lives on the edges rather than over the middle
17.5% of Duffey's pitches land in the middle third of the zone, well below what most pitchers give away.
33 of 189 located pitches.
The numbers behind these live in Pitch Data.
Take me there
He cannot find the zone often enough
Duffey works off the plate, with only 42.9% of his pitches in the zone, 22nd percentile.
189 pitches in 2024. 22nd percentile among qualified pitchers in 2024, 603rd in MLB.
The numbers behind these live in Pitch Data.
Take me there
He throws strikes to one type of hitter and not the other
Duffey lands 53.6% of his fastballs in the zone and only 35.6% of his breaking balls.
84 of his fastballs, 90 of his breaking balls.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .339 expected average against them, against .296 on his breaking balls.
84 of his fastballs thrown.
The numbers behind these live in Pitch Data.
Take me there
His ball moves more than the hitter expects it to
Duffey's stuff spins at 2,370 rpm, 71st percentile in the league.
189 pitches in 2024. 71st percentile among qualified pitchers in 2024, 222nd in MLB.
Twins
Career team 2015–2022