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2026
Marcus Walden headshot

Players · W · Pitcher · 2020

Marcus Walden

Age
32
B/T
R/R
Height
5' 10"
Weight
198 lb
Born
September 13, 1988 in Fresno, CA, United States
MLB debut
April 1, 2018
dbWAR
1.1
4 season(s)
IP
13.1
ERA
9.45
FIP
8.59
K/9
6.8
FIP−
193
100 = avg

Marcus Walden was a relief pitcher for the Boston Red Sox. In 2020 he struck out 10 batters over 13.1 innings across 15 appearances, going 0-2. His ERA of 9.45 was 112.2% higher than the league average of 4.45. Stripping out defence, his 8.59 FIP suggests he pitched better than his ERA shows. He missed bats on 18.4% of swings (8.8% of every pitch he threw), walked 12.7% of the batters he faced and struck out 14.1%. His -0.5 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, 2020.

FIP8.59
K/96.8
WHIP2.40
WAR-.5

WAR by season

1.20.3-0.5181920

Pitching

Standard and advanced, by season.

Trend
2020BOS15013.102123141099.458.592.406.86.1212193-0.5
2019BOS70078.0922613376323.813.691.198.83.785821.2
2018BOS8014.20011461433.682.071.168.61.889500.5

Batting

Standard and advanced, by season.

Trend
2019BOS11000001.000.000.000.000—0.0%100.0%.000-0.3-117-0.0—

Platoon splits

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

Opponent batting by the side the hitter bats from, 2020. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB292811216.393.414.786.49720.7%
vs RHB423412384.353.476.735.5019.5%

Pitch sequencing

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

ShowBatter
CutterSinkerSliderFour-seam

Select a count to see exactly what Marcus Walden throws in it.

Pitch arsenal

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

Cutter39.6%11389.92,21948.7%15.4%31.3551.052
Sinker25.6%7392.72,01330.1%19.2%12——
Slider21.8%6284.72,19937.1%33.3%9——
Four-Seam Fastball13.0%3792.42,05637.8%5.6%11——
Marcus Walden'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

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Marcus Walden
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.