MLB Daily DeltaWeek 18 · July 27, 2026
Portrait of George Kirby
George Kirby
SEA · P
Change to
Portrait of Will Warren
Will Warren
NYY · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22. Take whoever fills a bigger need.

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

George Kirby wins 2 (ERA, WHIP); Will Warren wins 2 (K, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
George Kirby
96.6
Will Warren
93.6
Swinging-Strike %lg 11.0% · higher = better
George Kirby
11.6%
Will Warren
9.9%
Strikeout %lg 22.0% · higher = better
George Kirby
21.8%
Will Warren
22.4%
Chase %lg 28.5% · higher = better
George Kirby
34.4%
Will Warren
28.3%
Hard-Hit % Allowedlg 40.0% · lower = better
George Kirby
42.2%
Will Warren
40.1%
Barrel % Allowedlg 8.0% · lower = better
George Kirby
6.9%
Will Warren
7.1%
xwOBA Allowedlg .315 · lower = better
George Kirby
.300
Will Warren
.326
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
2.764.82
lg xERA 4.10
now 3.77
3.76
Will Warren
2.764.82
lg xERA 4.10
now 3.22
4.36
WHIPlower is better
George Kirby
1.131.41
now 1.22
1.30
Will Warren
1.131.41
now 1.20
1.34

Volume · rest of season
Strikeoutshigher is better
George Kirby
4080.80
now 59
43
Will Warren
4080.80
now 70
55
Winshigher is better
George Kirby
.0009
now 5
25
Will Warren
.0009
now 7
37

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

If you already own them — trade angle
BuyGeorge Kirby — buy.conf 0.70
SellWill Warren — sell.conf 0.67
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