One pitch of his moves in a way hitters rarely see
Zeferjahn's 4-seam fastball carries 16.6 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
98 thrown, averaging 96.9 mph.
There is one pitch of his that keeps getting hit
Contact off Zeferjahn's 4-seam fastball leaves the bat at 95.7 mph, against 85.4 off his sinker.
98 and 81 of them thrown.
His fastball is the pitch everything else is built on
Zeferjahn's 4-seam fastball averages 96.9 mph, and has touched 100.0.
98 thrown, 25.3% of his pitches.
The contact he allows should not turn into many hits
The quality of contact against Zeferjahn projects a .228 average, 98th percentile.
389 pitches in 2026. 98th percentile among qualified pitchers in 2026, 12th in MLB.
The angle he throws from is unusual, and hitters notice
Zeferjahn releases the ball from a low three-quarters slot, about 31 degrees above horizontal and 1.8 feet to the third-base side of the rubber.
389 tracked release points, averaging 5.6 feet off the ground.
How much of the zone he uses depends on the count
Zeferjahn puts 57.1% of his pitches in the zone when he is behind and 31.7% when he is ahead.
126 located pitches behind, 101 ahead.
One pitch of his runs sideways more than almost anyone's
Zeferjahn's sweeper moves 14.4 inches toward the first-base side, the biggest horizontal move in his arsenal.
146 thrown, averaging 85.2 mph.
This is the pitch he goes to when he needs the out
With two strikes Zeferjahn goes to the sweeper: 45.7% of his two-strike pitches, against 34.2% the rest of the time.
116 two-strike pitches in 2026.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .266 expected average against them, against .207 on his breaking balls.
179 of his fastballs thrown.
Almost nothing hit off him is hit well
Only 30.4% of the contact Zeferjahn gives up is hit hard, 85th percentile.
389 pitches in 2026. 85th percentile among qualified pitchers in 2026, 80th in MLB.
One pitch of his spins more than almost anyone's
Zeferjahn's sweeper spins at 2,667 rpm, the highest in his arsenal.
146 thrown in 2026.
His ball moves more than the hitter expects it to
Zeferjahn's stuff spins at 2,412 rpm, 78th percentile in the league.
389 pitches in 2026. 78th percentile among qualified pitchers in 2026, 119th in MLB.
He falls behind hitters far too often
Zeferjahn throws a strike on the first pitch 54.4% of the time.
90 plate appearances started in 2026.
His pitches move in ways that fit together
Zeferjahn works with 4 pitches: Sweeper, 4-Seam Fastball, Sinker and Slider. The sweeper is 37.6% of everything he throws.
388 classified pitches in 2026.
He throws about as hard as anybody in the league
Zeferjahn averages 90.8 mph across his arsenal, 66th percentile in the league.
389 pitches in 2026. 66th percentile among qualified pitchers in 2026, 183rd in MLB.
He lives on one side of the plate
Zeferjahn works in on right-handers: his average pitch lands 1.6 inches to that side of the middle of the plate.
389 located pitches in 2026.
He cannot find the zone often enough
Zeferjahn works off the plate, with only 41.6% of his pitches in the zone, 35th percentile.
389 pitches in 2026. 35th percentile among qualified pitchers in 2026, 352nd in MLB.
He pitches around the zone once runners are on
Zeferjahn throws 39.8% of his pitches in the zone with a runner in scoring position and 42.3% with the bases empty.
103 pitches with a runner in scoring position, 286 with the bases empty.
He gets so far down the mound the ball arrives early
Zeferjahn releases the ball 6.7 feet down the mound, so the ball arrives sooner than the radar gun suggests.
261 tracked pitches in 2026.
The gap between his pitches is what makes them work
11.7 mph separates Zeferjahn's 4-seam fastball from his sweeper, 96.9 against 85.2.
98 and 146 of them respectively.
He saves one pitch for one side of the plate
Zeferjahn throws the sweeper 44.6% of the time against left-handers and 31.2% against right-handers.
202 pitches to right-handers, 186 to left-handers.
He lives on the edges rather than over the middle
18.8% of Zeferjahn's pitches land in the middle third of the zone, well below what most pitchers give away.
73 of 389 located pitches.
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The numbers behind these live in Pitch Data.
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One pitch of his moves in a way hitters rarely see
Zeferjahn's 4-seam fastball carries 16.6 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
98 thrown, averaging 96.9 mph.
One pitch of his runs sideways more than almost anyone's
Zeferjahn's sweeper moves 14.4 inches toward the first-base side, the biggest horizontal move in his arsenal.
146 thrown, averaging 85.2 mph.
The numbers behind these live in Pitch Data.
Take me there
There is one pitch of his that keeps getting hit
Contact off Zeferjahn's 4-seam fastball leaves the bat at 95.7 mph, against 85.4 off his sinker.
98 and 81 of them thrown.
His fastball is the pitch everything else is built on
Zeferjahn's 4-seam fastball averages 96.9 mph, and has touched 100.0.
98 thrown, 25.3% of his pitches.
One pitch of his spins more than almost anyone's
Zeferjahn's sweeper spins at 2,667 rpm, the highest in his arsenal.
146 thrown in 2026.
His pitches move in ways that fit together
Zeferjahn works with 4 pitches: Sweeper, 4-Seam Fastball, Sinker and Slider. The sweeper is 37.6% of everything he throws.
388 classified pitches in 2026.
The gap between his pitches is what makes them work
11.7 mph separates Zeferjahn's 4-seam fastball from his sweeper, 96.9 against 85.2.
98 and 146 of them respectively.
He saves one pitch for one side of the plate
Zeferjahn throws the sweeper 44.6% of the time against left-handers and 31.2% against right-handers.
202 pitches to right-handers, 186 to left-handers.
The numbers behind these live in Spray Chart.
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The contact he allows should not turn into many hits
The quality of contact against Zeferjahn projects a .228 average, 98th percentile.
389 pitches in 2026. 98th percentile among qualified pitchers in 2026, 12th in MLB.
Almost nothing hit off him is hit well
Only 30.4% of the contact Zeferjahn gives up is hit hard, 85th percentile.
389 pitches in 2026. 85th percentile among qualified pitchers in 2026, 80th in MLB.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Zeferjahn releases the ball from a low three-quarters slot, about 31 degrees above horizontal and 1.8 feet to the third-base side of the rubber.
389 tracked release points, averaging 5.6 feet off the ground.
He gets so far down the mound the ball arrives early
Zeferjahn releases the ball 6.7 feet down the mound, so the ball arrives sooner than the radar gun suggests.
261 tracked pitches in 2026.
The numbers behind these live in Pitch Data.
Take me there
How much of the zone he uses depends on the count
Zeferjahn puts 57.1% of his pitches in the zone when he is behind and 31.7% when he is ahead.
126 located pitches behind, 101 ahead.
This is the pitch he goes to when he needs the out
With two strikes Zeferjahn goes to the sweeper: 45.7% of his two-strike pitches, against 34.2% the rest of the time.
116 two-strike pitches in 2026.
He falls behind hitters far too often
Zeferjahn throws a strike on the first pitch 54.4% of the time.
90 plate appearances started 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 .266 expected average against them, against .207 on his breaking balls.
179 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
Zeferjahn's stuff spins at 2,412 rpm, 78th percentile in the league.
389 pitches in 2026. 78th percentile among qualified pitchers in 2026, 119th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He throws about as hard as anybody in the league
Zeferjahn averages 90.8 mph across his arsenal, 66th percentile in the league.
389 pitches in 2026. 66th percentile among qualified pitchers in 2026, 183rd in MLB.
The numbers behind these live in Pitch Data.
Take me there
He lives on one side of the plate
Zeferjahn works in on right-handers: his average pitch lands 1.6 inches to that side of the middle of the plate.
389 located pitches in 2026.
He lives on the edges rather than over the middle
18.8% of Zeferjahn's pitches land in the middle third of the zone, well below what most pitchers give away.
73 of 389 located pitches.
The numbers behind these live in Pitch Data.
Take me there
He cannot find the zone often enough
Zeferjahn works off the plate, with only 41.6% of his pitches in the zone, 35th percentile.
389 pitches in 2026. 35th percentile among qualified pitchers in 2026, 352nd in MLB.
The numbers behind these live in Matchups.
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He pitches around the zone once runners are on
Zeferjahn throws 39.8% of his pitches in the zone with a runner in scoring position and 42.3% with the bases empty.
103 pitches with a runner in scoring position, 286 with the bases empty.
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