DataBaseball
2026
John King headshot

Players · K · Pitcher · 2026

John King

Age
32
B/T
L/L
Height
6' 2"
Weight
215 lb
Number
#47
Born
September 14, 1994 in Laredo, TX, United States
MLB debut
September 4, 2020
Drafted
2017, round 10
College
Houston
High school
Clements
Salary, 2026
$1.5M
dbWAR
1.7
8 season(s)
IP
49.2
ERA
3.99
FIP
4.87
K/9
6.0
FIP−
117
100 = avg

John King is a relief pitcher for the Miami Marlins. In 2026 he struck out 33 batters over 49.2 innings across 50 appearances, going 6-2. His ERA of 3.99 is 4.6% lower than the league average of 4.18 — 11th of 18 on his team, and 260th of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 4.87 FIP suggests that his ERA had some help behind him. He missed bats on 21.7% of swings (10.2% of every pitch he threw), walked 8.6% of the batters he faced and struck out 16.8%. 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, 2026.

FIP4.87
K/96.0
WHIP1.01
WAR-.1

WAR by season

0.80.3-0.220212223242526

Pitching

Standard and advanced, by season.

Trend
2026MIA50149.2621332233173.994.871.016.03.195117-0.1
2025STL51048.1210652528144.665.001.635.22.6112120-0.2
2024STL56060.0330581938142.853.731.205.72.170920.6
2023STL/TEX35037.1210451520103.623.681.474.82.483850.5
2022TEX39051.1140612330144.034.091.465.32.51021030.3
2021TEX27046.0750411840123.523.321.157.82.383780.8
2020TEX6010.1100137946.105.711.657.83.5137128-0.1

Batting

Standard and advanced, by season.

Trend
2021TEX11000000.000.000.000.000.0000.0%0.0%.000-0.3-121-0.0—

Platoon splits

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

Opponent batting by the side the hitter bats from, 2026. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB11097164617.165.239.340.25715.5%
vs RHB87751731116.227.322.413.31718.4%

Pitch sequencing

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

ShowBatter
SinkerChangeupSliderSweeperCurveballFour-seam

Select a count to see exactly what John King throws in it.

Pitch arsenal

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

Sinker32.1%22990.42,17546.7%16.7%57.193.635
Changeup20.0%14383.81,56146.9%35.0%32.094.335
Slider19.5%13982.52,78139.6%19.7%34.206.752
Sweeper15.7%11281.52,80942.9%23.1%31.129.313
Curveball11.5%8279.02,85445.1%7.1%17.4121.265
John King'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 John King beside up to three others.

Compare — add up to 3 more players
John King

Similar players

Nearest 2026 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.