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Tom Cosgrove

Nationals
Number #34
Position RP
Bats L
Throws L
Age 30
Height 6' 2"
Weight 190 lbs
Birth Place Staten Island, NY
Born Jun 14, 1996

Key Insights

2026
His fastball is the pitch everything else is built on

Cosgrove's 4-seam fastball averages 88.5 mph, and has touched 90.4.

77 thrown, 28.7% of his pitches.
The angle he throws from is unusual, and hitters notice

Cosgrove releases the ball from a sidearm slot, about 9 degrees above horizontal and 2.7 feet to the first-base side of the rubber.

268 tracked release points, averaging 4.8 feet off the ground.
One pitch of his runs sideways more than almost anyone's

Cosgrove's sweeper moves 18.3 inches toward the third-base side, the biggest horizontal move in his arsenal.

178 thrown, averaging 73.4 mph.
There is one pitch of his that keeps getting hit

Contact off Cosgrove's 4-seam fastball leaves the bat at 93.9 mph, against 80.5 off his sweeper.

77 and 178 of them thrown.
The gap between his pitches is what makes them work

15.2 mph separates Cosgrove's 4-seam fastball from his sweeper, 88.5 against 73.4.

77 and 178 of them respectively.
His pitches move in ways that fit together

Cosgrove works with 2 pitches: Sweeper and 4-Seam Fastball. The sweeper is 66.4% of everything he throws.

268 classified pitches in 2026.

Movement Profile (Induced Break)

Catcher's Perspective • Pitch movement relative to a spinless ball

Player Bio Data
DOB Jun 14, 1996
Birth Place Staten Island, NY
Height 6' 2"
Weight 190 lbs LBS
Bats/Throws L/L