DataBaseball
2026
Zac Reininger headshot

Pitcher · 2019

Zac Reininger

Age
26
B/T
S/R
Height
6' 3"
Weight
190 lb
Born
January 28, 1993 in San Antonio, TX, USA
MLB debut
August 27, 2017
dbWAR
-1.6
3 season(s)
IP
28.0
ERA
8.68
FIP
8.82
K/9
5.5
FIP−
196
100 = avg

Zac Reininger is a relief pitcher for the Detroit Tigers. In 2019 he struck out 17 batters over 28.0 innings across 25 appearances, going 0-3. His ERA of 8.68 was 92.6% higher than the league average of 4.51 — 19th of 21 on his team, and 533rd of 545 among MLB pitchers with 20+ innings. Stripping out defence, his 8.82 FIP suggests the ERA was no fluke. He missed bats on 17.7% of swings (7.7% of every pitch he threw), walked 11.4% of the batters he faced and struck out 12.1%. His -1.1 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, 2019.

FIP8.82
K/95.5
WHIP2.14
WAR-1.1

Pitching

Standard and advanced, by season.

Trend
201925128.0030442717168.688.822.145.55.1193196-1.1
201818021.110028181897.595.791.737.63.8183139-0.3
20171009.2000168537.457.091.974.72.8171163-0.2

Platoon splits

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

Opponent batting by the side the hitter bats from, 2019. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB5542143126.333.473.667.46310.9%
vs RHB8580308411.375.400.850.50012.9%

Pitch sequencing

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

ShowBatter
Four-seamSinkerSliderCurveballChangeup

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

Pitch arsenal

What he throws, how hard, and how often it misses in 2019.

Four-Seam Fastball33.2%17794.42,30943.5%16.4%
Sinker26.6%14293.12,17940.1%12.7%
Slider23.5%12583.72,50938.4%16.7%
Curveball12.8%6880.52,66033.8%24.4%
Changeup3.9%2184.21,62423.8%42.9%
Zac Reininger'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

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Zac Reininger

Similar players

Nearest 2019 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.