Players · S · Pitcher · 2026

Roki Sasaki

Los Angeles Dodgers National League West

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: .3
IP: 121.1
ERA: 4.52
FIP: 4.78
K/9: 9.0
FIP−: 114

Roki Sasaki is a starting pitcher for the Los Angeles Dodgers. In 2026 he struck out 121 batters over 121.1 innings across 25 appearances, 23 of them starts, going 5-5. His ERA of 4.52 is 8.3% higher than the league average of 4.18 — 15th of 18 on his team, and 345th of 538 among MLB pitchers with 20+ innings. Stripping out defence, his 4.78 FIP suggests the ERA was no fluke. He missed bats on 29.8% of swings (15.0% of every pitch he threw), walked 9.2% of the batters he faced and struck out 23.3%. His 0.6 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.

FIP4.78

K/99.0

WHIP1.33

WAR.6

WAR by season

Pitching

Standard and advanced, by season.

																				Trend
2026	LAD	25	23	121.1	5	5	0	113	61	121	48	4.52	4.78	1.33	9.0	3.6	108	114	0.6
2025	LAD	10	8	36.1	1	1	0	30	18	28	22	4.46	5.80	1.43	6.9	5.4	107	140	-0.3

Platoon splits

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

Season

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.
Split	PA	AB	H	HR	BB	SO	AVG	OBP	SLG	wOBA	K%
vs LHB	299	266	62	11	31	72	.233	.312	.421	.324	24.1%
vs RHB	220	197	51	11	17	49	.259	.332	.523	.368	22.3%

Pitch sequencing

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

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Four-seamSplitterSliderForkball

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

Pitch arsenal

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

Season


Four-Seam Fastball	41.9%	874	97.8	2,281	50.0%	20.1%	189	.323	1.013
Splitter	28.4%	592	90.3	917	46.1%	35.9%	149	.168	.509
Slider	21.6%	451	86.6	2,049	49.9%	39.5%	88	.216	.767
Forkball	8.1%	169	85.6	623	36.1%	34.2%	39	.205	.680

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. 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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Similar players

Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.

Aaron NolaPHI

ERA: 4.54
FIP: 4.81
SO: 177
WAR: 1.1

Very close

Jack LeiterTEX

ERA: 5.29
FIP: 4.76
SO: 83
WAR: 0.4

Very close

Jake IrvinWSH

ERA: 5.40
FIP: 4.98
SO: 104
WAR: 0.4

Very close

Dean KremerMIN

ERA: 4.97
FIP: 4.87
SO: 82
WAR: 0.3

Very close

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.