DataBaseball
2026
Blaine Boyer headshot

Players · B · Pitcher · 2018

Blaine Boyer

Age
37
B/T
R/R
Height
6' 3"
Weight
235 lb
Number
#56
Born
July 11, 1981 in Atlanta, GA, United States
MLB debut
June 12, 2005
dbWAR
.6
5 season(s)
IP
21.2
ERA
12.05
FIP
8.33
K/9
3.7
FIP−
201
100 = avg

Blaine Boyer was a relief pitcher for the Kansas City Royals. In 2018 he struck out 9 batters over 21.2 innings across 21 appearances, going 2-1. His ERA of 12.05 was 190.3% higher than the league average of 4.15 — the worst on his team, and the worst among MLB pitchers with 20+ innings. Stripping out defence, his 8.33 FIP suggests he pitched better than his ERA shows. He missed bats on 14.2% of swings (6.7% of every pitch he threw), walked 11.9% of the batters he faced and struck out 8.3%. His -0.9 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, 2018.

FIP8.33
K/93.7
WHIP2.08
WAR-.9

WAR by season

0.6-0.2-0.915161718

Pitching

Standard and advanced, by season.

Trend
2018KC21021.2211322991312.058.332.083.75.4290201-0.9
2017BOS32041.1110502033144.353.591.557.23.0100820.6
2016MIL61066.0241802926173.953.961.473.52.394950.5
2015MIN68065.0361621833192.494.001.254.62.6631010.4

Batting

Standard and advanced, by season.

Trend
2016MIL11000000.000.000.000.000.0000.0%0.0%.000-0.3-118-0.0—

Platoon splits

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

Opponent batting by the side the hitter bats from, 2018. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB38307076.233.368.367.30315.8%
vs RHB716325763.397.437.841.5234.2%

Pitch sequencing

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

ShowBatter
SliderFour-seamSinkerCurveball

Select a count to see exactly what Blaine Boyer throws in it.

Pitch arsenal

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

Slider41.0%17887.32,49139.3%17.5%41.3661.185
Four-Seam Fastball31.3%13692.52,31652.2%13.7%28.286.819
Sinker18.4%8092.72,30230.0%8.8%17.294.675
Curveball9.0%3976.32,46341.0%12.5%8——
Blaine Boyer'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 Blaine Boyer beside up to three others.

Compare — add up to 3 more players
Blaine Boyer

Similar players

Nearest 2018 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.