DataBaseball
2026
Trevor Stephan headshot

Pitcher · 2023

Trevor Stephan

Age
28
B/T
R/R
Height
6' 5"
Weight
225 lb
Number
#37
Born
November 25, 1995 in Magnolia, TX, USA
MLB debut
April 3, 2021
dbWAR
2.0
3 season(s)
IP
68.2
ERA
4.06
FIP
3.56
K/9
9.8
FIP−
82
100 = avg

Trevor Stephan is a relief pitcher for the Cleveland Guardians. In 2023 he struck out 75 batters over 68.2 innings across 71 appearances, going 7-7. His ERA of 4.06 was 6.2% lower than the league average of 4.33 — 12th of 18 on his team, and 250th of 550 among MLB pitchers with 20+ innings. Stripping out defence, his 3.56 FIP suggests he pitched better than his ERA shows. He missed bats on 30.6% of swings (15.2% of every pitch he threw), walked 8.8% of the batters he faced and struck out 25.5%. 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, 2023.

FIP3.56
K/99.8
WHIP1.30
WAR.9

Pitching

Standard and advanced, by season.

Trend
202371068.2772633175264.063.561.309.83.494820.9
202266063.2653571982182.692.191.1811.62.568551.7
202143063.1311583175314.415.491.4110.74.4103129-0.5

Platoon splits

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

Opponent batting by the side the hitter bats from, 2023. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB1321142711634.237.328.333.29725.8%
vs RHB1621433651041.252.319.434.32625.3%

Pitch sequencing

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

ShowBatter
Four-seamSplitterSlider

Select a count to see exactly what Trevor Stephan throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2023.

Four-Seam Fastball47.8%53994.92,52746.6%20.5%
Splitter28.1%31786.51,28843.8%49.1%
Slider24.1%27285.42,61946.3%27.0%
Trevor Stephan'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.

Head to head

Put Trevor Stephan beside up to three others.

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Trevor Stephan

Similar players

Nearest 2023 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.