DataBaseball
2026
Zac Curtis headshot

Pitcher · 2018

Zac Curtis

Age
26
B/T
L/L
Height
5' 9"
Weight
190 lb
Born
July 4, 1992 in Panama City Beach, FL, USA
MLB debut
April 30, 2016
dbWAR
-.6
3 season(s)
IP
16.1
ERA
4.96
FIP
5.43
K/9
9.9
FIP−
131
100 = avg

Zac Curtis is a relief pitcher for the Texas Rangers. In 2018 he struck out 18 batters over 16.1 innings across 15 appearances, going 0-1. His ERA of 4.96 was 19.5% higher than the league average of 4.15. Stripping out defence, his 5.43 FIP suggests that his ERA had some help behind him. He missed bats on 29.0% of swings (12.0% of every pitch he threw), walked 24.1% of the batters he faced and struck out 22.8%. 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, 2018.

FIP5.43
K/99.9
WHIP1.90
WAR-.2

Pitching

Standard and advanced, by season.

Trend
201815016.101012918194.965.431.909.910.5120131-0.2
2017608.100061631.085.081.086.53.225117-0.0
201621013.1010131010136.757.201.956.88.8161172-0.4

Platoon splits

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

Opponent batting by the side the hitter bats from, 2018. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB21123063.250.476.333.38014.3%
vs RHB5844911315.205.379.318.31525.9%

Pitch sequencing

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

ShowBatter
Four-seamSliderChangeupSinker

Select a count to see exactly what Zac Curtis throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2018.

Four-Seam Fastball59.3%18892.12,30341.5%31.8%
Slider28.4%9087.02,37948.9%32.6%
Changeup10.4%3388.91,43927.3%12.5%
Zac Curtis'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 Zac Curtis beside up to three others.

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Zac Curtis
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.