DataBaseball
2026
Jeff Marquez headshot

Players · M · Pitcher · 2011 regular season

Jeff Marquez

Age
27
B/T
R/R
Height
6' 2"
Weight
190 lb
Number
#48
Born
August 10, 1984 in Vacaville, CA, United States
MLB debut
July 9, 2010

Compare with…

dbWAR
-.0
Regular season, 2 season(s)
IP
4.0
ERA
2.25
FIP
2.03
K/9
4.5
FIP−
51
100 = avg

Jeff Marquez was a relief pitcher for the New York Yankees. In 2011 he struck out 2 batters over 4.0 innings across 3 appearances, going 0-0. His ERA of 2.25 was 42.9% lower than the league average of 3.94. Stripping out defence, his 2.03 FIP suggests the ERA was no fluke. He missed bats on 10.7% of swings (4.8% of every pitch he threw), walked 0.0% of the batters he faced and struck out 11.1%. His 0.1 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, 2011 regular season.

FIP2.03
K/94.5
WHIP1.25
WAR.1

WAR by season

0.1-0.0-0.11011

Pitching Regular season

Standard and advanced, by season. Regular-season games only.

Trend
2011NYY304.000051202.252.031.254.50.057510.1
2010CWS101.0000220018.0016.082.000.00.0441394-0.1

Platoon splits

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

Opponent batting by the side the hitter bats from, 2011. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB881000.125.125.250.1610.0%
vs RHB10104002.400.400.500.39720.0%

Pitch sequencing

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

ShowBatter
SinkerSliderFour-seamChangeup

Select a count to see exactly what Jeff Marquez throws in it.

Pitch arsenal

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

Sinker43.5%2788.92,00340.7%0.0%9——
Slider37.1%2383.650734.8%13.3%8——
Jeff Marquez'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.

Compare Jeff Marquez with…

Side by side with up to three others.

Compare with… add up to 3 more players
Jeff Marquez
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.