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Zach Stewart headshot

Players · S · Pitcher · 2012 regular season

Zach Stewart

Age
26
B/T
R/R
Height
6' 2"
Weight
205 lb
Number
#48
Born
September 28, 1986 in Wichita Falls, TX, United States
MLB debut
June 16, 2011

Compare with…

dbWAR
-1.1
Regular season, 3 season(s)
IP
35.2
ERA
8.58
FIP
7.55
K/9
4.8
FIP−
188
100 = avg

Zach Stewart was a relief pitcher for the Chicago White Sox. In 2012 he struck out 19 batters over 35.2 innings across 20 appearances, going 1-4. His ERA of 8.58 was 113.7% higher than the league average of 4.01 — the worst on his team, and the second worst among MLB pitchers with 20+ innings. Stripping out defence, his 7.55 FIP suggests he pitched better than his ERA shows. He missed bats on 16.0% of swings (7.9% of every pitch he threw), walked 2.4% of the batters he faced and struck out 11.3%. His -1.2 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, 2012 regular season.

FIP7.55
K/94.8
WHIP1.74
WAR-1.2

WAR by season

0.1-0.6-1.21112

Pitching Regular season

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

Trend
2012CWS/BOS20335.214058341948.587.551.744.81.0214188-1.2
2011CWS/TOR131167.1260904445185.884.701.606.02.41491190.1

Batting Regular season

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

Trend
2011TOR12000002.000.000.000.000—0.0%100.0%.000-0.5-115-0.0—

Platoon splits

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

Opponent batting by the side the hitter bats from, 2012. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB717125504.352.352.648.4325.6%
vs RHB9790339415.367.396.700.46915.5%

Pitch sequencing

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

ShowBatter
Four-seamChangeupSliderSinkerCurveball

Select a count to see exactly what Zach Stewart throws in it.

Pitch arsenal

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

Four-Seam Fastball47.5%29589.71,87743.4%17.2%76.3821.165
Changeup20.1%12583.01,49739.2%12.5%36.333.889
Slider19.0%11882.692236.4%11.7%30.3671.167
Sinker9.8%6188.72,04847.5%22.2%13——
Curveball3.5%2277.11,03340.9%30.8%7——
Zach Stewart'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.

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Zach Stewart

Similar players

Nearest 2012 seasons by command, run prevention and role, on rate statistics rather than totals.

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.