Blake Walston

Arizona Diamondbacks

SP · #48 · Bats L · Throws L · 6'5" · 205 lb · Age 25 · 2 yrs in MLB

2026 grade

35.1

Runs prevented: +0.6
IP · ERA: 3.0 · 3.00
K · BB: 2 · 3
Rank: Not qualified

What the grade is made of

Runs each part saves or costs against an average pitcher facing the same batters. Contact counts a quarter for how it turned out, because over a season that's mostly the fielders and luck.

Home runs allowed0 vs 0 avg+0.5
Contact allowed (how it turned out counts a quarter)8 vs 7 avg+0.2
Strikeouts2 vs 2 avg−0.1

2026 game log: pitching

Game grades need 3 batters faced; starts are ranked against starts, relief outings against relief outings.

Game	Result	Dec	IP	H	R	ER	BB	K	HR	PC	Grade
Tue, Sep 8@KC	W 5-3	W	2.0	0	1	0	3	2	0	28	95.9
Tue, Sep 1vsPHI	L 1-7		1.0	1	1	1	0	0	0	14	42.5

Scores, box scores and play-by-play from ESPN. The run values and park factors behind the grades were worked out from Retrosheet's play-by-play: the information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at www.retrosheet.org.