When he falls behind, hitters know exactly what is coming
Behind in the count Jax throws a fastball 59.8% of the time, against 31.2% when he is ahead.
112 pitches behind in the count, 112 ahead.
One pitch of his moves in a way hitters rarely see
Jax's 4-seam fastball carries 17.1 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
99 thrown, averaging 96.3 mph.
There is one pitch of his that keeps getting hit
Contact off Jax's 4-seam fastball leaves the bat at 93.7 mph, against 81.9 off his changeup.
99 and 64 of them thrown.
He works one part of the zone far more than the rest
Jax lives at the bottom of the zone: his average pitch crosses at 2.08 feet, against a zone that runs 1.5 to 3.5.
386 located pitches in 2026.
He throws about as hard as anybody in the league
Jax averages 92.5 mph across his arsenal, 88th percentile in the league.
388 pitches in 2026. 88th percentile among qualified pitchers in 2026, 68th in MLB.
One pitch of his runs sideways more than almost anyone's
Jax's sinker moves 16.2 inches toward the third-base side, the biggest horizontal move in his arsenal.
73 thrown, averaging 96.0 mph.
He pitches differently depending on which hand is up
Jax puts 37.2% of his pitches to right-handers in the zone and 43.2% of his pitches to left-handers.
182 pitches to right-handed hitters, 206 to left-handed hitters.
One pitch of his spins more than almost anyone's
Jax's sweeper spins at 3,010 rpm, the highest in his arsenal.
104 thrown in 2026.
His fastball is the pitch everything else is built on
Jax's 4-seam fastball averages 96.3 mph, and has touched 98.6.
99 thrown, 25.6% of his pitches.
His ball moves more than the hitter expects it to
Jax's stuff spins at 2,544 rpm, 92nd percentile in the league.
388 pitches in 2026. 92nd percentile among qualified pitchers in 2026, 43rd in MLB.
One type of hitter does all the damage against him
Hitters do their damage on his offspeed pitches: a .364 expected average against them, against .298 on his breaking balls.
64 of his offspeed pitches thrown.
This is the pitch he goes to when he needs the out
With two strikes Jax goes to the sweeper: 34.9% of his two-strike pitches, against 23.9% the rest of the time.
106 two-strike pitches in 2026.
He saves one pitch for one side of the plate
Jax throws the sinker 34.4% of the time against right-handers and 5.3% against left-handers.
180 pitches to right-handers, 206 to left-handers.
He cannot find the zone often enough
Jax works off the plate, with only 40.4% of his pitches in the zone, 25th percentile.
388 pitches in 2026. 25th percentile among qualified pitchers in 2026, 404th in MLB.
He throws strikes to one type of hitter and not the other
Jax lands 48.7% of his fastballs in the zone and only 29.7% of his offspeed pitches.
193 of his fastballs, 64 of his offspeed pitches.
He pitches around the zone once runners are on
Jax throws 43.5% of his pitches in the zone with a runner in scoring position and 39.1% with the bases empty.
115 pitches with a runner in scoring position, 273 with the bases empty.
He gets ahead early and pitches from in front all night
Jax throws a strike on the first pitch 65.7% of the time.
99 plate appearances started in 2026.
Hitters cannot square him up, the contact is weak
Contact against Jax is weak: 86.6 mph off the bat on average, 76th percentile.
388 pitches in 2026. 76th percentile among qualified pitchers in 2026, 128th in MLB.
His pitches move in ways that fit together
Jax works with 6 pitches: Sweeper, 4-Seam Fastball, Sinker and Changeup, and a little else. The sweeper is 26.9% of everything he throws.
386 classified pitches in 2026.
He lives on the edges rather than over the middle
17.1% of Jax's pitches land in the middle third of the zone, well below what most pitchers give away.
66 of 386 located pitches.
How much of the zone he uses depends on the count
Jax puts 51.8% of his pitches in the zone when he is behind and 35.7% when he is ahead.
112 located pitches behind, 112 ahead.
The contact he allows is the kind that finds grass
The quality of contact against Jax projects a .340 average, 36th percentile.
388 pitches in 2026. 36th percentile among qualified pitchers in 2026, 344th 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 Jax throws a fastball 59.8% of the time, against 31.2% when he is ahead.
112 pitches behind in the count, 112 ahead.
This is the pitch he goes to when he needs the out
With two strikes Jax goes to the sweeper: 34.9% of his two-strike pitches, against 23.9% the rest of the time.
106 two-strike pitches in 2026.
He gets ahead early and pitches from in front all night
Jax throws a strike on the first pitch 65.7% of the time.
99 plate appearances started in 2026.
How much of the zone he uses depends on the count
Jax puts 51.8% of his pitches in the zone when he is behind and 35.7% when he is ahead.
112 located pitches behind, 112 ahead.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his moves in a way hitters rarely see
Jax's 4-seam fastball carries 17.1 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
99 thrown, averaging 96.3 mph.
One pitch of his runs sideways more than almost anyone's
Jax's sinker moves 16.2 inches toward the third-base side, the biggest horizontal move in his arsenal.
73 thrown, averaging 96.0 mph.
The numbers behind these live in Pitch Data.
Take me there
There is one pitch of his that keeps getting hit
Contact off Jax's 4-seam fastball leaves the bat at 93.7 mph, against 81.9 off his changeup.
99 and 64 of them thrown.
One pitch of his spins more than almost anyone's
Jax's sweeper spins at 3,010 rpm, the highest in his arsenal.
104 thrown in 2026.
His fastball is the pitch everything else is built on
Jax's 4-seam fastball averages 96.3 mph, and has touched 98.6.
99 thrown, 25.6% of his pitches.
He saves one pitch for one side of the plate
Jax throws the sinker 34.4% of the time against right-handers and 5.3% against left-handers.
180 pitches to right-handers, 206 to left-handers.
His pitches move in ways that fit together
Jax works with 6 pitches: Sweeper, 4-Seam Fastball, Sinker and Changeup, and a little else. The sweeper is 26.9% of everything he throws.
386 classified pitches in 2026.
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Jax lives at the bottom of the zone: his average pitch crosses at 2.08 feet, against a zone that runs 1.5 to 3.5.
386 located pitches in 2026.
He lives on the edges rather than over the middle
17.1% of Jax's pitches land in the middle third of the zone, well below what most pitchers give away.
66 of 386 located pitches.
The numbers behind these live in Pitch Data.
Take me there
He throws about as hard as anybody in the league
Jax averages 92.5 mph across his arsenal, 88th percentile in the league.
388 pitches in 2026. 88th percentile among qualified pitchers in 2026, 68th in MLB.
The numbers behind these live in Matchups.
Take me there
He pitches differently depending on which hand is up
Jax puts 37.2% of his pitches to right-handers in the zone and 43.2% of his pitches to left-handers.
182 pitches to right-handed hitters, 206 to left-handed hitters.
The numbers behind these live in Pitch Data.
Take me there
His ball moves more than the hitter expects it to
Jax's stuff spins at 2,544 rpm, 92nd percentile in the league.
388 pitches in 2026. 92nd percentile among qualified pitchers in 2026, 43rd 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 offspeed pitches: a .364 expected average against them, against .298 on his breaking balls.
64 of his offspeed pitches thrown.
He throws strikes to one type of hitter and not the other
Jax lands 48.7% of his fastballs in the zone and only 29.7% of his offspeed pitches.
193 of his fastballs, 64 of his offspeed pitches.
The numbers behind these live in Pitch Data.
Take me there
He cannot find the zone often enough
Jax works off the plate, with only 40.4% of his pitches in the zone, 25th percentile.
388 pitches in 2026. 25th percentile among qualified pitchers in 2026, 404th in MLB.
The numbers behind these live in Matchups.
Take me there
He pitches around the zone once runners are on
Jax throws 43.5% of his pitches in the zone with a runner in scoring position and 39.1% with the bases empty.
115 pitches with a runner in scoring position, 273 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 Jax is weak: 86.6 mph off the bat on average, 76th percentile.
388 pitches in 2026. 76th percentile among qualified pitchers in 2026, 128th in MLB.
The contact he allows is the kind that finds grass
The quality of contact against Jax projects a .340 average, 36th percentile.
388 pitches in 2026. 36th percentile among qualified pitchers in 2026, 344th in MLB.
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