The angle he throws from is unusual, and hitters notice
Diekman releases the ball from a sidearm slot, about 16 degrees above horizontal and 3.7 feet to the first-base side of the rubber.
627 tracked release points, averaging 5.5 feet off the ground.
When he falls behind, hitters know exactly what is coming
Behind in the count Diekman throws a fastball 79% of the time, against 47.9% when he is ahead.
186 pitches behind in the count, 188 ahead.
One pitch of his runs sideways more than almost anyone's
Diekman's 4-seam fastball moves 134.5 inches toward the third-base side, the biggest horizontal move in his arsenal.
299 thrown, averaging 94.7 mph.
There is one pitch of his that keeps getting hit
Contact off Diekman's changeup leaves the bat at 90.8 mph, against 83.8 off his sinker.
61 and 86 of them thrown.
One type of hitter does all the damage against him
Hitters do their damage on his offspeed pitches: a .393 expected average against them, against .325 on his fastballs.
61 of his offspeed pitches thrown.
One pitch of his spins more than almost anyone's
Diekman's sweeper spins at 2,858 rpm, the highest in his arsenal.
181 thrown in 2024.
This is the pitch he goes to when he needs the out
With two strikes Diekman goes to the sweeper: 36% of his two-strike pitches, against 25.2% the rest of the time.
211 two-strike pitches in 2024.
He throws strikes to one type of hitter and not the other
Diekman lands 53% of his fastballs in the zone and only 32.8% of his offspeed pitches.
385 of his fastballs, 61 of his offspeed pitches.
Hitters cannot square him up, the contact is weak
Contact against Diekman is weak: 86.3 mph off the bat on average, 84th percentile.
627 pitches in 2024. 84th percentile among qualified pitchers in 2024, 121st in MLB.
His pitches move in ways that fit together
Diekman works with 4 pitches: 4-Seam Fastball, Sweeper, Sinker and Changeup. The 4-seam fastball is 47.7% of everything he throws.
627 classified pitches in 2024.
One pitch of his moves in a way hitters rarely see
Diekman's 4-seam fastball carries 11.2 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
299 thrown, averaging 94.7 mph.
He saves one pitch for one side of the plate
Diekman throws the changeup 18% of the time against right-handers and 0% against left-handers.
338 pitches to right-handers, 289 to left-handers.
He throws about as hard as anybody in the league
Diekman averages 90.4 mph across his arsenal, 67th percentile in the league.
627 pitches in 2024. 67th percentile among qualified pitchers in 2024, 252nd in MLB.
His ball moves more than the hitter expects it to
Diekman's stuff spins at 2,382 rpm, 73rd percentile in the league.
627 pitches in 2024. 73rd percentile among qualified pitchers in 2024, 210th in MLB.
He falls behind hitters far too often
Diekman throws a strike on the first pitch 55.9% of the time.
145 plate appearances started in 2024.
He lives on one side of the plate
Diekman works in on right-handers: his average pitch lands 1.5 inches to that side of the middle of the plate.
627 located pitches in 2024.
His fastball is the pitch everything else is built on
Diekman's 4-seam fastball averages 94.7 mph, and has touched 97.8.
299 thrown, 47.7% of his pitches.
How much of the zone he uses depends on the count
Diekman puts 51.6% of his pitches in the zone when he is behind and 38.3% when he is ahead.
186 located pitches behind, 188 ahead.
The gap between his pitches is what makes them work
11.9 mph separates Diekman's 4-seam fastball from his sweeper, 94.7 against 82.8.
299 and 181 of them respectively.
He lives on the edges rather than over the middle
18.7% of Diekman's pitches land in the middle third of the zone, well below what most pitchers give away.
117 of 627 located pitches.
The contact he allows is the kind that finds grass
The quality of contact against Diekman projects a .337 average, 35th percentile.
627 pitches in 2024. 35th percentile among qualified pitchers in 2024, 502nd in MLB.
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The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Diekman releases the ball from a sidearm slot, about 16 degrees above horizontal and 3.7 feet to the first-base side of the rubber.
627 tracked release points, averaging 5.5 feet off the ground.
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 Diekman throws a fastball 79% of the time, against 47.9% when he is ahead.
186 pitches behind in the count, 188 ahead.
This is the pitch he goes to when he needs the out
With two strikes Diekman goes to the sweeper: 36% of his two-strike pitches, against 25.2% the rest of the time.
211 two-strike pitches in 2024.
He falls behind hitters far too often
Diekman throws a strike on the first pitch 55.9% of the time.
145 plate appearances started in 2024.
How much of the zone he uses depends on the count
Diekman puts 51.6% of his pitches in the zone when he is behind and 38.3% when he is ahead.
186 located pitches behind, 188 ahead.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Diekman's 4-seam fastball moves 134.5 inches toward the third-base side, the biggest horizontal move in his arsenal.
299 thrown, averaging 94.7 mph.
One pitch of his moves in a way hitters rarely see
Diekman's 4-seam fastball carries 11.2 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
299 thrown, averaging 94.7 mph.
The numbers behind these live in Pitch Data.
Take me there
There is one pitch of his that keeps getting hit
Contact off Diekman's changeup leaves the bat at 90.8 mph, against 83.8 off his sinker.
61 and 86 of them thrown.
One pitch of his spins more than almost anyone's
Diekman's sweeper spins at 2,858 rpm, the highest in his arsenal.
181 thrown in 2024.
His pitches move in ways that fit together
Diekman works with 4 pitches: 4-Seam Fastball, Sweeper, Sinker and Changeup. The 4-seam fastball is 47.7% of everything he throws.
627 classified pitches in 2024.
He saves one pitch for one side of the plate
Diekman throws the changeup 18% of the time against right-handers and 0% against left-handers.
338 pitches to right-handers, 289 to left-handers.
His fastball is the pitch everything else is built on
Diekman's 4-seam fastball averages 94.7 mph, and has touched 97.8.
299 thrown, 47.7% of his pitches.
The gap between his pitches is what makes them work
11.9 mph separates Diekman's 4-seam fastball from his sweeper, 94.7 against 82.8.
299 and 181 of them respectively.
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 offspeed pitches: a .393 expected average against them, against .325 on his fastballs.
61 of his offspeed pitches thrown.
He throws strikes to one type of hitter and not the other
Diekman lands 53% of his fastballs in the zone and only 32.8% of his offspeed pitches.
385 of his fastballs, 61 of his offspeed pitches.
The numbers behind these live in Spray Chart.
Take me there
Hitters cannot square him up, the contact is weak
Contact against Diekman is weak: 86.3 mph off the bat on average, 84th percentile.
627 pitches in 2024. 84th percentile among qualified pitchers in 2024, 121st in MLB.
The contact he allows is the kind that finds grass
The quality of contact against Diekman projects a .337 average, 35th percentile.
627 pitches in 2024. 35th percentile among qualified pitchers in 2024, 502nd in MLB.
The numbers behind these live in Pitch Data.
Take me there
He throws about as hard as anybody in the league
Diekman averages 90.4 mph across his arsenal, 67th percentile in the league.
627 pitches in 2024. 67th percentile among qualified pitchers in 2024, 252nd in MLB.
The numbers behind these live in Pitch Data.
Take me there
His ball moves more than the hitter expects it to
Diekman's stuff spins at 2,382 rpm, 73rd percentile in the league.
627 pitches in 2024. 73rd percentile among qualified pitchers in 2024, 210th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He lives on one side of the plate
Diekman works in on right-handers: his average pitch lands 1.5 inches to that side of the middle of the plate.
627 located pitches in 2024.
He lives on the edges rather than over the middle
18.7% of Diekman's pitches land in the middle third of the zone, well below what most pitchers give away.
117 of 627 located pitches.
Phillies
Career team 2012–2015