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Zack Kelly

Red Sox Career team 2022–2026
Number #76
Position RP
Bats R
Throws R
Age 31
Height 6' 3"
Weight 231 lbs
Birth Place Roanoke, VA
Born Mar 3, 1995

Key Insights

2026
One type of hitter does all the damage against him

Hitters do their damage on his fastballs: a .418 expected average against them, against .212 on his breaking balls.

206 of his fastballs thrown.
Runners on base do not change how he is hit

27.8% of the contact against Kelly with a runner in scoring position is hit hard, against 44.4% with the bases empty.

95 pitches with a runner in scoring position, 180 with the bases empty.
The shape of the contact off him says how he gets outs

51.1% of the contact against Kelly is on the ground and 20% of it is in the air.

45 tracked batted balls allowed.
The contact he allows is the kind that finds grass

The quality of contact against Kelly projects a .372 average, 12th percentile.

275 pitches in 2026. 12th percentile among qualified pitchers in 2026, 472nd in MLB.
One side of the plate does most of the damage against him

Right-handed hitters average 82.8 mph off the bat against Kelly and left-handers 95.7.

31 tracked batted balls from right-handers, 14 from left-handers.
Hitters cannot square him up, the contact is weak

Contact against Kelly is weak: 86.8 mph off the bat on average, 74th percentile.

275 pitches in 2026. 74th percentile among qualified pitchers in 2026, 143rd in MLB.

Contextual Splits

Pitch
Outcome
Batter
Situation
Single
Double
Triple
Home Run
Out
Vs All Pitchers
Player Bio Data
DOB Mar 3, 1995
Birth Place Roanoke, VA
Height 6' 3"
Weight 231 lbs LBS
Bats/Throws R/R