DataBaseball
2026
Dellin Betances headshot

Players · B · Pitcher · 2021

Dellin Betances

Age
33
B/T
R/R
Height
6' 8"
Weight
265 lb
Number
#61
Born
March 23, 1988 in New York, NY, United States
MLB debut
September 22, 2011
dbWAR
7.4
8 season(s)
IP
1.0
ERA
9.00
FIP
7.17
K/9
9.0
FIP−
168
100 = avg

Dellin Betances was a relief pitcher for the New York Mets. In 2021 he struck out 1 batter over 1.0 inning across 1 appearance, going 0-0. His ERA of 9.00 was 111.0% higher than the league average of 4.27. Stripping out defence, his 7.17 FIP suggests he pitched better than his ERA shows. He missed bats on 16.7% of swings (4.8% of every pitch he threw), walked 20.0% of the batters he faced and struck out 20.0%. 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, 2021.

FIP7.17
K/99.0
WHIP1.00
WAR-.0

WAR by season

2.51.2-0.015161718192021

Pitching

Standard and advanced, by season.

Trend
2021NYM101.000001119.007.171.009.09.0211168-0.0
2020NYM15011.2010121011127.714.912.068.59.31731100.0
2019NYY100.200000200.00-2.790.0027.00.00-620.1
2018NYY66066.24644420115262.702.471.0515.53.565601.8
2017NYY66059.236102919100442.873.221.2215.16.666741.1
2016NYY73073.036125425126283.081.781.1215.53.574422.5
2015NYY74084.06494514131401.502.481.0114.04.338632.0

Batting

Standard and advanced, by season.

Trend
2018NYY11000001.000.000.000.000—0.0%100.0%.000-0.3-116-0.0—

Platoon splits

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

Opponent batting by the side the hitter bats from, 2021. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB210000.000.500.000.3770.0%
vs RHB320011.000.333.000.24233.3%

Pitch sequencing

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

ShowBatter
Knuckle curveFour-seam

Select a count to see exactly what Dellin Betances throws in it.

Pitch arsenal

What he throws, how hard, how often it misses, and what hitters do with it.

Four-Seam Fastball57.1%1291.82,25525.0%0.0%2——
Dellin Betances'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. BAA and OPS are what hitters did against each pitch, credited to the one that ended the plate appearance, and are left blank under 15 at-bats.

Head to head

Put Dellin Betances beside up to three others.

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Dellin Betances
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.