MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of George Kirby
George Kirby
SEA · P
Change to
Portrait of Roki Sasaki
Roki Sasaki
LAD · P
Change to
Who's more valuable, rest of season

Roki Sasaki.

He projects to help you in more roto categories the rest of the way — strikeouts and WHIP. George Kirby’s box score looks better right now, but the luck-stripped projection flips it.

Head-to-head
K
ERA
WHIP
W
SV n/a

Roki Sasaki wins 2 categories (K, WHIP); George Kirby wins 1 (ERA); 1 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
George Kirby
96.7
Roki Sasaki
97.8
Swinging-Strike %lg 11.0% · higher = better
George Kirby
11.4%
Roki Sasaki
14.9%
Strikeout %lg 22.0% · higher = better
George Kirby
19.9%
Roki Sasaki
22.9%
Chase %lg 28.5% · higher = better
George Kirby
34.8%
Roki Sasaki
33.4%
Hard-Hit % Allowedlg 40.0% · lower = better
George Kirby
40.3%
Roki Sasaki
43.1%
Barrel % Allowedlg 8.0% · lower = better
George Kirby
6.9%
Roki Sasaki
10.0%
xwOBA Allowedlg .315 · lower = better
George Kirby
.310
Roki Sasaki
.323
stabilized — trust it · small sample yet · dashed = league avg · right = better
05

The tape

Rest-of-season projection · bold = leads
rest-of-season projection current season projection range
Rate · earned-run quality
ERAlower is better
George Kirby
3.444.92
lg xERA 4.10
now 3.77
4.03
Roki Sasaki
3.444.92
lg xERA 4.10
now 4.59
4.30
WHIPlower is better
George Kirby
1.151.42
now 1.22
1.35
Roki Sasaki
1.151.42
now 1.35
1.34

Volume · rest of season
Strikeoutshigher is better
George Kirby
4078.20
now 59
11
Roki Sasaki
4078.20
now 50
12
Winshigher is better
George Kirby
.0007
now 5
11
Roki Sasaki
.0007
now 3
01

SV — not applicable. Both pitch out of the rotation.

If you already own them — trade angle
Hold · steadyGeorge Kirby — hold.conf 0.60
SellRoki Sasaki — sell.conf 0.64
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