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Greg Weissert

Red Sox
Number #57
Position RP
Bats R
Throws R
Age 31
Height 6' 2"
Weight 235 lbs
Birth Place Bay Shore, NY
Born Feb 4, 1995

Key Insights

2026
One type of hitter does all the damage against him

Hitters do their damage on his breaking balls: a .480 expected average against them, against .313 on his fastballs.

85 of his breaking balls thrown.
There is one pitch of his that keeps getting hit

Contact off Weissert's slider leaves the bat at 91.8 mph, against 81.4 off his sweeper.

81 and 125 of them thrown.
Hitters tend to hit him to one part of the field

49.1% of the balls put in play against Weissert have gone to centre field.

84 of 171 located batted balls allowed.
Hitters cannot square him up, the contact is weak

Contact against Weissert is weak: 87.1 mph off the bat on average, 68th percentile.

283 pitches in 2026. 68th percentile among qualified pitchers in 2026, 170th in MLB.
The home runs are what is undoing his season

Weissert has given up 8 tracked home runs, 4 of them to left field, the longest 431 feet.

8 tracked home runs allowed in 2026.
His ball moves more than the hitter expects it to

Weissert's stuff spins at 2,337 rpm, 63rd percentile in the league.

283 pitches in 2026. 63rd percentile among qualified pitchers in 2026, 197th in MLB.

Contextual Splits

Pitch
Outcome
Batter
Situation
Single
Double
Triple
Home Run
Out
Vs All Pitchers
Player Bio Data
DOB Feb 4, 1995
Birth Place Bay Shore, NY
Height 6' 2"
Weight 235 lbs LBS
Bats/Throws R/R