DataBaseball
2026
Roki Sasaki headshot

Pitcher · 2026

Roki Sasaki

Age
25
B/T
R/R
Height
6' 2"
Weight
187 lb
Number
#11
Born
November 3, 2001 in Rikuzentakata, Japan
MLB debut
March 19, 2025
dbWAR
-.2
2 season(s)
IP
105.0
ERA
4.54
FIP
4.95
K/9
9.1
FIP−
119
100 = avg

Roki Sasaki is a starting pitcher for the Los Angeles Dodgers. In 2026 he struck out 106 batters over 105.0 innings across 20 appearances, 20 of them starts, going 5-5. His ERA of 4.54 was 8.8% higher than the league average of 4.18 — 12th of 15 on his team, and 309th of 467 among MLB pitchers with 20+ innings. Stripping out defence, his 4.95 FIP suggests that his ERA had some help behind him. He missed bats on 29.7% of swings (14.9% of every pitch he threw), walked 9.0% of the batters he faced and struck out 23.8%. 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.

FIP4.95
K/99.1
WHIP1.28
WAR.1

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 LHB25522653102762.235.315.434.32924.3%
vs RHB19117341111344.237.309.520.35623.0%

Pitch sequencing

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

ShowBatter
Four-seamSplitterSliderForkball

Select a count to see exactly what Roki Sasaki throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2026.

Four-Seam Fastball42.2%75397.92,26550.5%20.4%
Splitter27.7%49590.291246.7%35.7%
Slider21.3%38086.62,04349.5%39.3%
Forkball8.8%15885.561136.1%33.3%
Roki Sasaki'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
20262020105.05509453106404.544.951.289.13.41091190.1
202510836.1110301828224.465.801.436.95.4107140-0.3

Head to head

Put Roki Sasaki beside up to three others.

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Roki Sasaki

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.