This is the pitch he goes to when he needs the out
With two strikes Swanson goes to the 4-seam fastball: 59.5% of his two-strike pitches, against 39.5% the rest of the time.
42 two-strike pitches in 2025.
One pitch of his runs sideways more than almost anyone's
Swanson's splitter moves 71.5 inches toward the first-base side, the biggest horizontal move in his arsenal.
56 thrown, averaging 83.3 mph.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .359 expected average against them, against .258 on his offspeed pitches.
59 of his fastballs thrown.
One pitch of his moves in a way hitters rarely see
Swanson's 4-seam fastball carries 18.3 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
59 thrown, averaging 92.9 mph.
He throws strikes to one type of hitter and not the other
Swanson lands 57.6% of his fastballs in the zone and only 28.6% of his offspeed pitches.
59 of his fastballs, 56 of his offspeed pitches.
He saves one pitch for one side of the plate
Swanson throws the slider 21% of the time against right-handers and 0% against left-handers.
62 pitches to right-handers, 66 to left-handers.
He works one part of the zone far more than the rest
Swanson lives at the bottom of the zone: his average pitch crosses at 2.22 feet, against a zone that runs 1.5 to 3.5.
128 located pitches in 2025.
The angle he throws from is unusual, and hitters notice
Swanson releases the ball from a three-quarters slot, about 63 degrees above horizontal and 0.8 feet to the third-base side of the rubber.
128 tracked release points, averaging 6.0 feet off the ground.
He gets so far down the mound the ball arrives early
Swanson releases the ball 6.8 feet down the mound, so the ball arrives sooner than the radar gun suggests.
128 tracked pitches in 2025.
There is one pitch of his that keeps getting hit
Contact off Swanson's splitter leaves the bat at 86.0 mph, against 83.2 off his 4-seam fastball.
56 and 59 of them thrown.
He lives on one side of the plate
Swanson works away from right-handers: his average pitch lands 1.7 inches to that side of the middle of the plate.
128 located pitches in 2025.
He pitches around the zone once runners are on
Swanson throws 41.8% of his pitches in the zone with a runner in scoring position and 44.3% with the bases empty.
67 pitches with a runner in scoring position, 61 with the bases empty.
His fastball is the pitch everything else is built on
Swanson's 4-seam fastball averages 92.9 mph, and has touched 94.9.
59 thrown, 46.1% of his pitches.
The gap between his pitches is what makes them work
9.6 mph separates Swanson's 4-seam fastball from his splitter, 92.9 against 83.3.
59 and 56 of them respectively.
One pitch of his spins more than almost anyone's
Swanson's 4-seam fastball spins at 2,295 rpm, the highest in his arsenal.
59 thrown in 2025.
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The numbers behind these live in Pitch Data.
Take me there
This is the pitch he goes to when he needs the out
With two strikes Swanson goes to the 4-seam fastball: 59.5% of his two-strike pitches, against 39.5% the rest of the time.
42 two-strike pitches in 2025.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Swanson's splitter moves 71.5 inches toward the first-base side, the biggest horizontal move in his arsenal.
56 thrown, averaging 83.3 mph.
One pitch of his moves in a way hitters rarely see
Swanson's 4-seam fastball carries 18.3 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
59 thrown, averaging 92.9 mph.
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 .359 expected average against them, against .258 on his offspeed pitches.
59 of his fastballs thrown.
He throws strikes to one type of hitter and not the other
Swanson lands 57.6% of his fastballs in the zone and only 28.6% of his offspeed pitches.
59 of his fastballs, 56 of his offspeed pitches.
The numbers behind these live in Pitch Data.
Take me there
He saves one pitch for one side of the plate
Swanson throws the slider 21% of the time against right-handers and 0% against left-handers.
62 pitches to right-handers, 66 to left-handers.
There is one pitch of his that keeps getting hit
Contact off Swanson's splitter leaves the bat at 86.0 mph, against 83.2 off his 4-seam fastball.
56 and 59 of them thrown.
His fastball is the pitch everything else is built on
Swanson's 4-seam fastball averages 92.9 mph, and has touched 94.9.
59 thrown, 46.1% of his pitches.
The gap between his pitches is what makes them work
9.6 mph separates Swanson's 4-seam fastball from his splitter, 92.9 against 83.3.
59 and 56 of them respectively.
One pitch of his spins more than almost anyone's
Swanson's 4-seam fastball spins at 2,295 rpm, the highest in his arsenal.
59 thrown in 2025.
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Swanson lives at the bottom of the zone: his average pitch crosses at 2.22 feet, against a zone that runs 1.5 to 3.5.
128 located pitches in 2025.
He lives on one side of the plate
Swanson works away from right-handers: his average pitch lands 1.7 inches to that side of the middle of the plate.
128 located pitches in 2025.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Swanson releases the ball from a three-quarters slot, about 63 degrees above horizontal and 0.8 feet to the third-base side of the rubber.
128 tracked release points, averaging 6.0 feet off the ground.
He gets so far down the mound the ball arrives early
Swanson releases the ball 6.8 feet down the mound, so the ball arrives sooner than the radar gun suggests.
128 tracked pitches in 2025.
The numbers behind these live in Matchups.
Take me there
He pitches around the zone once runners are on
Swanson throws 41.8% of his pitches in the zone with a runner in scoring position and 44.3% with the bases empty.
67 pitches with a runner in scoring position, 61 with the bases empty.
Mariners
Career team 2019–2022