He falls behind hitters far too often
Wilhelmsen throws a strike on the first pitch 40.7% of the time.
113 plate appearances started in 2017.
The gap between his pitches is what makes them work
17.0 mph separates Wilhelmsen's 4-seam fastball from his curveball, 95.1 against 78.1.
157 and 80 of them respectively.
He works one part of the zone far more than the rest
Wilhelmsen lives at the bottom of the zone: his average pitch crosses at 1.88 feet, against a zone that runs 1.5 to 3.5.
452 located pitches in 2017.
When he falls behind, hitters know exactly what is coming
Behind in the count Wilhelmsen throws a fastball 73.5% of the time, against 35.9% when he is ahead.
162 pitches behind in the count, 92 ahead.
He lives on the edges rather than over the middle
12.2% of Wilhelmsen's pitches land in the middle third of the zone, well below what most pitchers give away.
55 of 452 located pitches.
He releases the ball about where everyone else does
Wilhelmsen releases the ball 5.7 feet down the mound, a shorter stride than most.
452 tracked pitches in 2017.
He cannot find the zone often enough
Wilhelmsen works off the plate, with only 40.5% of his pitches in the zone, 18th percentile.
453 pitches in 2017. 18th percentile among qualified pitchers in 2017, 579th in MLB.
One pitch of his runs sideways more than almost anyone's
Wilhelmsen's sinker moves 13.1 inches toward the third-base side, the biggest horizontal move in his arsenal.
101 thrown, averaging 95.1 mph.
He saves one pitch for one side of the plate
Wilhelmsen throws the slider 29.5% of the time against right-handers and 7.6% against left-handers.
295 pitches to right-handers, 157 to left-handers.
There is one pitch of his that keeps getting hit
Contact off Wilhelmsen's 4-seam fastball leaves the bat at 90.1 mph, against 85.2 off his slider.
157 and 99 of them thrown.
One type of hitter does all the damage against him
Hitters do their damage on his breaking balls: a .425 expected average against them, against .373 on his fastballs.
179 of his breaking balls thrown.
One pitch of his moves in a way hitters rarely see
Wilhelmsen's 4-seam fastball carries 12.1 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
157 thrown, averaging 95.1 mph.
The contact he allows is the kind that finds grass
The quality of contact against Wilhelmsen projects a .386 average, 21st percentile.
453 pitches in 2017. 21st percentile among qualified pitchers in 2017, 556th in MLB.
How much of the zone he uses depends on the count
Wilhelmsen puts 57.4% of his pitches in the zone when he is behind and 38% when he is ahead.
162 located pitches behind, 92 ahead.
He throws strikes to one type of hitter and not the other
Wilhelmsen lands 47.3% of his fastballs in the zone and only 32.4% of his breaking balls.
258 of his fastballs, 179 of his breaking balls.
His fastball is the pitch everything else is built on
Wilhelmsen's 4-seam fastball averages 95.1 mph, and has touched 97.4.
157 thrown, 34.7% of his pitches.
His pitches move in ways that fit together
Wilhelmsen works with 4 pitches: 4-Seam Fastball, Sinker, Slider and Curveball. The 4-seam fastball is 34.7% of everything he throws.
452 classified pitches in 2017.
He throws about as hard as anybody in the league
Wilhelmsen averages 89.9 mph across his arsenal, 64th percentile in the league.
453 pitches in 2017. 64th percentile among qualified pitchers in 2017, 255th in MLB.
This is the pitch he goes to when he needs the out
With two strikes Wilhelmsen goes to the curveball: 22.3% of his two-strike pitches, against 16.3% the rest of the time.
103 two-strike pitches in 2017.
He lives on one side of the plate
Wilhelmsen works in on right-handers: his average pitch lands 2.0 inches to that side of the middle of the plate.
452 located pitches in 2017.
The angle he throws from is unusual, and hitters notice
Wilhelmsen releases the ball from a three-quarters slot, about 45 degrees above horizontal and 1.6 feet to the third-base side of the rubber.
452 tracked release points, averaging 6.2 feet off the ground.
When hitters connect off him, they hit it hard
Hitters average 88.1 mph off the bat against Wilhelmsen, 38th percentile.
453 pitches in 2017. 38th percentile among qualified pitchers in 2017, 437th in MLB.
One pitch of his spins more than almost anyone's
Wilhelmsen's 4-seam fastball spins at 2,317 rpm, the highest in his arsenal.
157 thrown in 2017.
One pitch exists only to make the hitter think
Wilhelmsen has thrown 15 changeups this season, 3.3% of his pitches, at 88.6 mph: a look rather than a weapon.
452 classified pitches in 2017.
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The numbers behind these live in Pitch Data.
Take me there
He falls behind hitters far too often
Wilhelmsen throws a strike on the first pitch 40.7% of the time.
113 plate appearances started in 2017.
When he falls behind, hitters know exactly what is coming
Behind in the count Wilhelmsen throws a fastball 73.5% of the time, against 35.9% when he is ahead.
162 pitches behind in the count, 92 ahead.
How much of the zone he uses depends on the count
Wilhelmsen puts 57.4% of his pitches in the zone when he is behind and 38% when he is ahead.
162 located pitches behind, 92 ahead.
This is the pitch he goes to when he needs the out
With two strikes Wilhelmsen goes to the curveball: 22.3% of his two-strike pitches, against 16.3% the rest of the time.
103 two-strike pitches in 2017.
The numbers behind these live in Pitch Data.
Take me there
The gap between his pitches is what makes them work
17.0 mph separates Wilhelmsen's 4-seam fastball from his curveball, 95.1 against 78.1.
157 and 80 of them respectively.
He saves one pitch for one side of the plate
Wilhelmsen throws the slider 29.5% of the time against right-handers and 7.6% against left-handers.
295 pitches to right-handers, 157 to left-handers.
There is one pitch of his that keeps getting hit
Contact off Wilhelmsen's 4-seam fastball leaves the bat at 90.1 mph, against 85.2 off his slider.
157 and 99 of them thrown.
His fastball is the pitch everything else is built on
Wilhelmsen's 4-seam fastball averages 95.1 mph, and has touched 97.4.
157 thrown, 34.7% of his pitches.
His pitches move in ways that fit together
Wilhelmsen works with 4 pitches: 4-Seam Fastball, Sinker, Slider and Curveball. The 4-seam fastball is 34.7% of everything he throws.
452 classified pitches in 2017.
One pitch of his spins more than almost anyone's
Wilhelmsen's 4-seam fastball spins at 2,317 rpm, the highest in his arsenal.
157 thrown in 2017.
One pitch exists only to make the hitter think
Wilhelmsen has thrown 15 changeups this season, 3.3% of his pitches, at 88.6 mph: a look rather than a weapon.
452 classified pitches in 2017.
Show more
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Wilhelmsen lives at the bottom of the zone: his average pitch crosses at 1.88 feet, against a zone that runs 1.5 to 3.5.
452 located pitches in 2017.
He lives on the edges rather than over the middle
12.2% of Wilhelmsen's pitches land in the middle third of the zone, well below what most pitchers give away.
55 of 452 located pitches.
He lives on one side of the plate
Wilhelmsen works in on right-handers: his average pitch lands 2.0 inches to that side of the middle of the plate.
452 located pitches in 2017.
The numbers behind these live in Pitch Data.
Take me there
He releases the ball about where everyone else does
Wilhelmsen releases the ball 5.7 feet down the mound, a shorter stride than most.
452 tracked pitches in 2017.
The angle he throws from is unusual, and hitters notice
Wilhelmsen releases the ball from a three-quarters slot, about 45 degrees above horizontal and 1.6 feet to the third-base side of the rubber.
452 tracked release points, averaging 6.2 feet off the ground.
The numbers behind these live in Pitch Data.
Take me there
He cannot find the zone often enough
Wilhelmsen works off the plate, with only 40.5% of his pitches in the zone, 18th percentile.
453 pitches in 2017. 18th percentile among qualified pitchers in 2017, 579th in MLB.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Wilhelmsen's sinker moves 13.1 inches toward the third-base side, the biggest horizontal move in his arsenal.
101 thrown, averaging 95.1 mph.
One pitch of his moves in a way hitters rarely see
Wilhelmsen's 4-seam fastball carries 12.1 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
157 thrown, averaging 95.1 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 breaking balls: a .425 expected average against them, against .373 on his fastballs.
179 of his breaking balls thrown.
He throws strikes to one type of hitter and not the other
Wilhelmsen lands 47.3% of his fastballs in the zone and only 32.4% of his breaking balls.
258 of his fastballs, 179 of his breaking balls.
The numbers behind these live in Spray Chart.
Take me there
The contact he allows is the kind that finds grass
The quality of contact against Wilhelmsen projects a .386 average, 21st percentile.
453 pitches in 2017. 21st percentile among qualified pitchers in 2017, 556th in MLB.
When hitters connect off him, they hit it hard
Hitters average 88.1 mph off the bat against Wilhelmsen, 38th percentile.
453 pitches in 2017. 38th percentile among qualified pitchers in 2017, 437th in MLB.
The numbers behind these live in Pitch Data.
Take me there
He throws about as hard as anybody in the league
Wilhelmsen averages 89.9 mph across his arsenal, 64th percentile in the league.
453 pitches in 2017. 64th percentile among qualified pitchers in 2017, 255th in MLB.
Mariners
Career team 2011–2016