DataBaseball
2026
Tanner Roark headshot

Players · R · Pitcher · 2021

Tanner Roark

Age
35
B/T
R/R
Height
6' 2"
Weight
238 lb
Born
October 5, 1986 in Wilmington, IL, United States
MLB debut
August 7, 2013
dbWAR
9.1
12 season(s)
IP
7.0
ERA
6.43
FIP
8.17
K/9
6.4
FIP−
192
100 = avg

Tanner Roark was a relief pitcher for the Toronto Blue Jays. In 2021 he struck out 5 batters over 7.0 innings across 3 appearances, going 0-1. His ERA of 6.43 was 50.7% higher than the league average of 4.27. Stripping out defence, his 8.17 FIP suggests that his ERA had some help behind him. He missed bats on 15.3% of swings (6.9% of every pitch he threw), walked 6.5% of the batters he faced and struck out 16.1%. 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, 2021.

FIP8.17
K/96.4
WHIP1.29
WAR-.2

WAR by season

3.41.3-0.715161718192021

Pitching

Standard and advanced, by season.

Trend
2021TOR317.001075526.438.171.296.42.6151192-0.2
2020TOR111147.2230603641236.806.861.747.74.3153154-0.7
2019CIN/OAK3131165.11010018080158514.354.671.408.62.8971041.8
2018WSH3130180.1915018187146504.344.271.287.32.51051032.0
2017WSH3230181.11311017894166644.674.131.338.23.2107952.6
2016WSH3433210.01610017366172732.833.791.177.43.168903.4
2015WSH4012111.04711195470264.384.701.315.72.1111119-0.1

Batting

Standard and advanced, by season.

Trend
2019CIN19345120013.152.152.273.121.2110.0%38.2%.175-4.3-00.1
2018WSH286511080119.190.217.259.069.2821.5%29.2%.212-5.6260.4
2017WSH29635000122.091.107.109.018.1521.6%34.9%.098-11.9-54-0.3
2016WSH32758030525.125.188.141.016.2056.7%33.3%.158-9.8-110.1
2015WSH1829500009.185.185.259.074.2780.0%31.0%.192-2.9120.1

Platoon splits

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

Opponent batting by the side the hitter bats from, 2021. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB18164322.250.333.813.46011.1%
vs RHB13133003.231.231.308.23123.1%

Pitch sequencing

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

ShowBatter
Four-seamCurveballSliderSinkerChangeup

Select a count to see exactly what Tanner Roark throws in it.

Pitch arsenal

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

Four-Seam Fastball22.9%3090.72,00833.3%10.0%6——
Slider22.9%3086.32,22143.3%0.0%8——
Curveball22.1%2973.12,75437.9%41.7%7——
Sinker17.6%2390.42,01273.9%16.7%1——
Changeup14.5%1981.81,80726.3%11.1%7——
Tanner Roark'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.

Head to head

Put Tanner Roark beside up to three others.

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Tanner Roark
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.