DataBaseball
2026
Tanner Rainey headshot

Pitcher · 2025

Tanner Rainey

Age
33
B/T
R/R
Height
6' 3"
Weight
245 lb
Number
#72
Born
December 25, 1992 in Folsom, LA, USA
MLB debut
April 10, 2018
Drafted
2015, round CB-B
College
West Alabama
High school
Saint Paul's School
dbWAR
-.4
2 season(s)
IP
9.2
ERA
11.17
FIP
3.96
K/9
10.2
FIP−
95
100 = avg

Tanner Rainey is a relief pitcher for the Pittsburgh Pirates. In 2025 he struck out 11 batters over 9.2 innings across 13 appearances, going 0-1. His ERA of 11.17 was 168.7% higher than the league average of 4.16. Stripping out defence, his 3.96 FIP suggests he pitched better than his ERA shows. He missed bats on 34.3% of swings (16.9% of every pitch he threw), walked 19.1% of the batters he faced and struck out 23.4%. 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, 2025.

FIP3.96
K/910.2
WHIP1.76
WAR.1

Platoon splits

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

Opponent batting by the side the hitter bats from, 2025. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB24214025.190.292.286.27020.8%
vs RHB23144076.286.500.286.39026.1%

Pitch sequencing

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

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Four-seamSlider

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Pitch arsenal

What he throws, how hard, and how often it misses in 2025.

Four-Seam Fastball52.7%10695.32,40347.2%13.2%
Slider47.3%9586.32,36348.4%58.7%
Tanner Rainey'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.

Pitching

Standard and advanced, by season.

Trend
20251309.201081211911.173.961.7610.28.4269950.1
202450051.0000472744294.765.421.497.85.1117133-0.5

Head to head

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Tanner Rainey
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.