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Jonathan Loaisiga

Diamondbacks
Number #43
Position RP
Bats R
Throws R
Age 31
Height 5' 11"
Weight 195 lbs
Birth Place Managua, Nicaragua
Born Nov 2, 1994

Key Insights

2026
He pitches differently depending on which hand is up

Loaisiga puts 47.3% of his pitches to right-handers in the zone and 32.1% of his pitches to left-handers.

129 pitches to right-handed hitters, 137 to left-handed hitters.
His fastball is the pitch everything else is built on

Loaisiga's sinker averages 97.9 mph, and has touched 99.5.

339 thrown, 35.2% of his pitches.
When he falls behind, hitters know exactly what is coming

Behind in the count Loaisiga throws a fastball 73.2% of the time, against 44.5% when he is ahead.

213 pitches behind in the count, 299 ahead.
One type of hitter does all the damage against him

Hitters do their damage on his offspeed pitches: a .383 expected average against them, against .257 on his breaking balls.

78 of his offspeed pitches thrown.
One pitch of his runs sideways more than almost anyone's

Loaisiga's sinker moves 16.9 inches toward the third-base side, the biggest horizontal move in his arsenal.

339 thrown, averaging 97.9 mph.
He throws about as hard as anybody in the league

Loaisiga averages 93.5 mph across his arsenal, 93rd percentile in the league.

266 pitches in 2026. 93rd percentile among qualified pitchers in 2026, 38th in MLB.

Movement Profile (Induced Break)

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

Player Bio Data
DOB Nov 2, 1994
Birth Place Managua, Nicaragua
Height 5' 11"
Weight 195 lbs LBS
Bats/Throws R/R