DataBaseball
2026
Alec Marsh headshot

Pitcher · 2024

Alec Marsh

Age
26
B/T
R/R
Height
6' 2"
Weight
220 lb
Number
#48
Born
May 14, 1998 in Milwaukee, WI, USA
MLB debut
June 30, 2023
Drafted
2019, round CB-B
College
Arizona State
Salary, 2024
$744,750
dbWAR
.9
1 season(s)
IP
129.0
ERA
4.53
FIP
4.34
K/9
8.6
FIP−
106
100 = avg

Alec Marsh is a starting pitcher for the Kansas City Royals. In 2024 he struck out 123 batters over 129.0 innings across 26 appearances, 25 of them starts, going 9-9. His ERA of 4.53 was 11.2% higher than the league average of 4.08 — 12th of 15 on his team, and 368th of 541 among MLB pitchers with 20+ innings. Stripping out defence, his 4.34 FIP suggests the ERA was no fluke. He missed bats on 23.5% of swings (11.2% of every pitch he threw), walked 7.1% of the batters he faced and struck out 22.4%. 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, 2024.

FIP4.34
K/98.6
WHIP1.26
WAR.9

Platoon splits

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

Opponent batting by the side the hitter bats from, 2024. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB3092797091861.251.317.427.32519.7%
vs RHB24021553102162.247.314.442.32725.8%

Pitch sequencing

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

ShowBatter
Four-seamSliderCurveballSinkerChangeupSweeper

Select a count to see exactly what Alec Marsh throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2024.

Four-Seam Fastball37.0%79994.22,49850.3%22.0%
Slider17.9%38686.62,46448.4%29.4%
Curveball16.4%35582.82,50847.0%27.4%
Sinker13.8%29993.62,38941.8%10.6%
Changeup10.0%21686.31,74738.9%17.7%
Sweeper4.9%10686.12,47750.0%46.4%
Alec Marsh'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
20242625129.099012365123394.534.341.268.62.71111060.9

Head to head

Put Alec Marsh beside up to three others.

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Alec Marsh

Similar players

Nearest 2024 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.