Players · W · Pitcher · 2026

Blake Walston

Arizona Diamondbacks National League West

Age: 25
B/T: L/L
Height: 6' 5"
Weight: 205 lb
Number: #48

Born: June 28, 2001 in Wilmington, NC, United States
MLB debut: May 1, 2024
Drafted: 2019, round 1
High school: New Hanover

dbWAR: -.3
IP: 3.0
ERA: 3.00
FIP: 4.77
K/9: 6.0
FIP−: 114

Blake Walston is a relief pitcher for the Arizona Diamondbacks. In 2026 he struck out 2 batters over 3.0 innings across 2 appearances, going 1-0. His ERA of 3.00 is 28.2% lower than the league average of 4.18. Stripping out defence, his 4.77 FIP suggests that his ERA had some help behind him. He missed bats on 33.3% of swings (11.9% of every pitch he threw), walked 23.1% of the batters he faced and struck out 15.4%. His -0.0 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.

FIP4.77

K/96.0

WHIP1.33

WAR-.0

WAR by season

Pitching

Standard and advanced, by season.

																				Trend
2026	AZ	2	0	3.0	1	0	0	1	1	2	3	3.00	4.77	1.33	6.0	9.0	72	114	-0.0
2024	AZ	7	2	18.1	1	0	0	16	9	18	10	4.42	6.17	1.42	8.8	4.9	108	151	-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	6	3	0	0	1	2	.000	.167	.000	.121	33.3%
vs RHB	7	5	1	0	2	0	.200	.429	.400	.251	0.0%

Pitch sequencing

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

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Four-seamSliderCurveballCutter

Select a count to see exactly what Blake Walston throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	40.5%	17	91.6	2,094	23.5%	20.0%	3	—	—

Blake Walston'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

Put Blake Walston beside up to three others.

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Blake Walston

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.