DataBaseball
2026
Michael Tonkin headshot

Pitcher · 2025

Michael Tonkin

Age
36
B/T
R/R
Height
6' 7"
Weight
220 lb
Number
#39
Born
November 19, 1989 in Glendale, CA, USA
MLB debut
July 11, 2013
Drafted
2008, round 30
High school
Palmdale
Salary, 2025
$1M
dbWAR
.9
2 season(s)
IP
24.0
ERA
4.88
FIP
4.80
K/9
7.1
FIP−
115
100 = avg

Michael Tonkin is a relief pitcher for the Minnesota Twins. In 2025 he struck out 19 batters over 24.0 innings across 21 appearances, going 2-1. His ERA of 4.88 was 17.2% higher than the league average of 4.16 — 12th of 21 on his team, and 401st of 542 among MLB pitchers with 20+ innings. Stripping out defence, his 4.80 FIP suggests the ERA was no fluke. He missed bats on 20.7% of swings (9.1% of every pitch he threw), walked 7.8% of the batters he faced and struck out 18.4%. 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.

FIP4.80
K/97.1
WHIP1.17
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 LHB5549153210.306.364.571.39618.2%
vs RHB48405069.125.271.150.22118.8%

Pitch sequencing

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

ShowBatter
Four-seamSliderSweeperSinker

Select a count to see exactly what Michael Tonkin throws in it.

Pitch arsenal

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

Four-Seam Fastball56.9%22692.42,35548.7%21.1%
Slider25.9%10383.92,23139.8%23.8%
Sweeper9.1%3680.12,50350.0%23.1%
Sinker8.1%3291.82,32334.4%0.0%
Michael Tonkin'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
202521024.021020131984.884.801.177.13.0117115-0.1
202457079.1442703285303.633.441.269.63.489841.0

Head to head

Put Michael Tonkin beside up to three others.

Compare — add up to 3 more players
Michael Tonkin

Similar players

Nearest 2025 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.