His fastball is the pitch everything else is built on
Bolsinger's cutter averages 88.7 mph, and has touched 91.8.
262 thrown, 34.7% of his pitches.
This is the pitch he goes to when he needs the out
With two strikes Bolsinger goes to the slider: 38% of his two-strike pitches, against 6.4% the rest of the time.
221 two-strike pitches in 2017.
He gets by without much velocity, and it costs him
Bolsinger averages 84.5 mph across his arsenal, 7th percentile in the league.
755 pitches in 2017. 7th percentile among qualified pitchers in 2017, 652nd in MLB.
One pitch of his moves in a way hitters rarely see
Bolsinger's cutter carries 15.8 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
262 thrown, averaging 88.7 mph.
There is one pitch of his that keeps getting hit
Contact off Bolsinger's cutter leaves the bat at 92.0 mph, against 80.7 off his slider.
262 and 118 of them thrown.
One type of hitter does all the damage against him
Hitters do their damage on his fastballs: a .423 expected average against them, against .360 on his breaking balls.
365 of his fastballs thrown.
Too much of the contact against him is loud
43.9% of the contact Bolsinger gives up is hit hard, 14th percentile.
755 pitches in 2017. 14th percentile among qualified pitchers in 2017, 604th in MLB.
The angle he throws from is unusual, and hitters notice
Bolsinger releases the ball from a three-quarters slot, about 62 degrees above horizontal and 0.9 feet to the third-base side of the rubber.
754 tracked release points, averaging 6.0 feet off the ground.
He lives on the edges rather than over the middle
16% of Bolsinger's pitches land in the middle third of the zone, well below what most pitchers give away.
121 of 754 located pitches.
His pitches move in ways that fit together
Bolsinger works with 4 pitches: Cutter, Curveball, Slider and 4-Seam Fastball. The cutter is 34.7% of everything he throws.
754 classified pitches in 2017.
One pitch of his runs sideways more than almost anyone's
Bolsinger's 4-seam fastball moves 10.8 inches toward the third-base side, the biggest horizontal move in his arsenal.
103 thrown, averaging 90.0 mph.
When he falls behind, hitters know exactly what is coming
Behind in the count Bolsinger throws a fastball 50.7% of the time, against 42.5% when he is ahead.
201 pitches behind in the count, 226 ahead.
The contact he allows is the kind that finds grass
The quality of contact against Bolsinger projects a .385 average, 23rd percentile.
755 pitches in 2017. 23rd percentile among qualified pitchers in 2017, 545th in MLB.
He works one part of the zone far more than the rest
Bolsinger lives at the bottom of the zone: his average pitch crosses at 2.32 feet, against a zone that runs 1.5 to 3.5.
754 located pitches in 2017.
His velocity drains away as the outing goes on
Bolsinger's fastball averages 89.2 mph in his first 25 pitches of a start and 88.7 past his 75th.
123 early fastballs, 48 late ones.
How much of the zone he uses depends on the count
Bolsinger puts 52.2% of his pitches in the zone when he is behind and 40.3% when he is ahead.
201 located pitches behind, 226 ahead.
He lives on one side of the plate
Bolsinger works in on right-handers: his average pitch lands 1.9 inches to that side of the middle of the plate.
754 located pitches in 2017.
One pitch of his spins more than almost anyone's
Bolsinger's slider spins at 2,491 rpm, the highest in his arsenal.
118 thrown in 2017.
When hitters connect off him, they hit it hard
Hitters average 88.7 mph off the bat against Bolsinger, 30th percentile.
755 pitches in 2017. 30th percentile among qualified pitchers in 2017, 491st in MLB.
The gap between his pitches is what makes them work
10.2 mph separates Bolsinger's 4-seam fastball from his curveball, 90.0 against 79.8.
103 and 250 of them respectively.
He releases the ball about where everyone else does
Bolsinger releases the ball 6.2 feet down the mound, a shorter stride than most.
754 tracked pitches in 2017.
One pitch exists only to make the hitter think
Bolsinger has thrown 21 changeups this season, 2.8% of his pitches, at 82.7 mph: a look rather than a weapon.
754 classified pitches in 2017.
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The numbers behind these live in Pitch Data.
Take me there
His fastball is the pitch everything else is built on
Bolsinger's cutter averages 88.7 mph, and has touched 91.8.
262 thrown, 34.7% of his pitches.
There is one pitch of his that keeps getting hit
Contact off Bolsinger's cutter leaves the bat at 92.0 mph, against 80.7 off his slider.
262 and 118 of them thrown.
His pitches move in ways that fit together
Bolsinger works with 4 pitches: Cutter, Curveball, Slider and 4-Seam Fastball. The cutter is 34.7% of everything he throws.
754 classified pitches in 2017.
One pitch of his spins more than almost anyone's
Bolsinger's slider spins at 2,491 rpm, the highest in his arsenal.
118 thrown in 2017.
The gap between his pitches is what makes them work
10.2 mph separates Bolsinger's 4-seam fastball from his curveball, 90.0 against 79.8.
103 and 250 of them respectively.
One pitch exists only to make the hitter think
Bolsinger has thrown 21 changeups this season, 2.8% of his pitches, at 82.7 mph: a look rather than a weapon.
754 classified pitches in 2017.
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 Bolsinger goes to the slider: 38% of his two-strike pitches, against 6.4% the rest of the time.
221 two-strike pitches in 2017.
When he falls behind, hitters know exactly what is coming
Behind in the count Bolsinger throws a fastball 50.7% of the time, against 42.5% when he is ahead.
201 pitches behind in the count, 226 ahead.
How much of the zone he uses depends on the count
Bolsinger puts 52.2% of his pitches in the zone when he is behind and 40.3% when he is ahead.
201 located pitches behind, 226 ahead.
The numbers behind these live in Pitch Data.
Take me there
He gets by without much velocity, and it costs him
Bolsinger averages 84.5 mph across his arsenal, 7th percentile in the league.
755 pitches in 2017. 7th percentile among qualified pitchers in 2017, 652nd in MLB.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his moves in a way hitters rarely see
Bolsinger's cutter carries 15.8 inches of ride against a spinless ball, the biggest vertical move in his arsenal.
262 thrown, averaging 88.7 mph.
One pitch of his runs sideways more than almost anyone's
Bolsinger's 4-seam fastball moves 10.8 inches toward the third-base side, the biggest horizontal move in his arsenal.
103 thrown, averaging 90.0 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 .423 expected average against them, against .360 on his breaking balls.
365 of his fastballs thrown.
The numbers behind these live in Spray Chart.
Take me there
Too much of the contact against him is loud
43.9% of the contact Bolsinger gives up is hit hard, 14th percentile.
755 pitches in 2017. 14th percentile among qualified pitchers in 2017, 604th in MLB.
The contact he allows is the kind that finds grass
The quality of contact against Bolsinger projects a .385 average, 23rd percentile.
755 pitches in 2017. 23rd percentile among qualified pitchers in 2017, 545th in MLB.
When hitters connect off him, they hit it hard
Hitters average 88.7 mph off the bat against Bolsinger, 30th percentile.
755 pitches in 2017. 30th percentile among qualified pitchers in 2017, 491st in MLB.
The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Bolsinger releases the ball from a three-quarters slot, about 62 degrees above horizontal and 0.9 feet to the third-base side of the rubber.
754 tracked release points, averaging 6.0 feet off the ground.
His velocity drains away as the outing goes on
Bolsinger's fastball averages 89.2 mph in his first 25 pitches of a start and 88.7 past his 75th.
123 early fastballs, 48 late ones.
He releases the ball about where everyone else does
Bolsinger releases the ball 6.2 feet down the mound, a shorter stride than most.
754 tracked pitches in 2017.
The numbers behind these live in Pitch Data.
Take me there
He lives on the edges rather than over the middle
16% of Bolsinger's pitches land in the middle third of the zone, well below what most pitchers give away.
121 of 754 located pitches.
He works one part of the zone far more than the rest
Bolsinger lives at the bottom of the zone: his average pitch crosses at 2.32 feet, against a zone that runs 1.5 to 3.5.
754 located pitches in 2017.
He lives on one side of the plate
Bolsinger works in on right-handers: his average pitch lands 1.9 inches to that side of the middle of the plate.
754 located pitches in 2017.