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Reiver Sanmartin

Giants
Number #48
Position RP
Bats L
Throws L
Age 30
Height 6' 1"
Weight 188 lbs
Birth Place Cartagena, Colombia
Born Apr 15, 1996

Key Insights

2026
One pitch of his runs sideways more than almost anyone's

Sanmartin's sinker moves 18.1 inches toward the first-base side, the biggest horizontal move in his arsenal.

128 thrown, averaging 91.7 mph.
The angle he throws from is unusual, and hitters notice

Sanmartin releases the ball from a sidearm slot, about 21 degrees above horizontal and 2.5 feet to the first-base side of the rubber.

345 tracked release points, averaging 5.2 feet off the ground.
He works one part of the zone far more than the rest

Sanmartin lives at the bottom of the zone: his average pitch crosses at 1.89 feet, against a zone that runs 1.5 to 3.5.

345 located pitches in 2026.
He saves one pitch for one side of the plate

Sanmartin throws the changeup 46.1% of the time against right-handers and 5.2% against left-handers.

191 pitches to right-handers, 154 to left-handers.
When he falls behind, hitters know exactly what is coming

Behind in the count Sanmartin throws a fastball 53.4% of the time, against 32.3% when he is ahead.

88 pitches behind in the count, 96 ahead.
How much of the zone he uses depends on the count

Sanmartin puts 58% of his pitches in the zone when he is behind and 29.2% when he is ahead.

88 located pitches behind, 96 ahead.

Movement Profile (Induced Break)

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

Player Bio Data
DOB Apr 15, 1996
Birth Place Cartagena, Colombia
Height 6' 1"
Weight 188 lbs LBS
Bats/Throws L/L