DataBaseball
2026
Gregory Santos headshot

Pitcher · 2026

Gregory Santos

Age
27
B/T
R/R
Height
6' 3"
Weight
236 lb
Number
#57
Born
August 28, 1999 in San Cristobal, Dominican Republic
MLB debut
April 22, 2021
dbWAR
.0
3 season(s)
IP
5.0
ERA
3.60
FIP
4.49
K/9
1.8
FIP−
107
100 = avg

Gregory Santos is a relief pitcher for the San Francisco Giants. In 2026 he struck out 1 batter over 5.0 innings across 3 appearances, going 0-0. His ERA of 3.60 was 13.8% lower than the league average of 4.18. Stripping out defence, his 4.49 FIP suggests that his ERA had some help behind him. He missed bats on 8.1% of swings (3.5% of every pitch he threw), walked 13.6% of the batters he faced and struck out 4.5%. His 0.0 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, 2026.

FIP4.49
K/91.8
WHIP1.60
WAR.0

Platoon splits

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

Opponent batting by the side the hitter bats from, 2026. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB974021.571.6671.000.68511.1%
vs RHB13121010.083.154.167.1530.0%

Pitch sequencing

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

ShowBatter
SliderSinkerFour-seam

Select a count to see exactly what Gregory Santos throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2026.

Slider51.2%4489.12,49750.0%6.3%
Sinker33.7%2997.22,30631.0%12.5%
Four-Seam Fastball12.8%1196.12,42045.5%0.0%
Gregory Santos'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.

Pitching

Standard and advanced, by season.

Trend
2026305.000052133.604.491.601.85.4861070.0
2025807.011084085.146.562.290.010.3124158-0.2
2024807.101074614.912.351.097.41.2120580.2

Head to head

Put Gregory Santos beside up to three others.

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Gregory Santos
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.