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Gerson Bautista headshot

Pitcher · 2019

Gerson Bautista

Age
24
B/T
R/R
Height
6' 3"
Weight
195 lb
Born
May 31, 1995 in San Juan, Dominican Republic
MLB debut
April 17, 2018
dbWAR
-.6
2 season(s)
IP
9.0
ERA
11.00
FIP
7.55
K/9
7.0
FIP−
168
100 = avg

Gerson Bautista is a relief pitcher for the Seattle Mariners. In 2019 he struck out 7 batters over 9.0 innings across 8 appearances, going 0-1. His ERA of 11.00 was 144.1% higher than the league average of 4.51. Stripping out defence, his 7.55 FIP suggests he pitched better than his ERA shows. He missed bats on 23.6% of swings (10.7% of every pitch he threw), walked 18.4% of the batters he faced and struck out 14.3%. His -0.2 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.

League context

Percentile among qualified pitchers, 2019.

FIP7.55
K/97.0
WHIP2.44
WAR-.2

Pitching

Standard and advanced, by season.

Trend
2019829.001013117911.007.552.447.09.0244168-0.2
2018504.1010863512.4611.243.006.210.4300271-0.3

Platoon splits

How left- and right-handed hitters fare against him.

Opponent batting by the side the hitter bats from, 2019. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB19183103.167.158.333.19515.8%
vs RHB302110194.476.633.810.58613.3%

Pitch sequencing

What Gerson Bautista throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter
Four-seamSlider

Select a count to see exactly what Gerson Bautista throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2019.

Four-Seam Fastball62.9%12497.72,40946.0%16.4%
Slider35.5%7086.02,17335.7%38.5%
Gerson Bautista's arsenal by usage. Velocity is average release speed in mph, spin in rpm, and whiff rate is misses per swing — the cleanest single measure of whether a pitch beats hitters.

Head to head

Put Gerson Bautista beside up to three others.

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Gerson Bautista
How these are computed

wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.