MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of George Kirby
George Kirby
SEA · P
Change to
Portrait of Ryan Weathers
Ryan Weathers
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, W); Ryan Weathers wins 2 (K, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
George Kirby
96.7
Ryan Weathers
95.8
Swinging-Strike %lg 11.0% · higher = better
George Kirby
11.4%
Ryan Weathers
12.1%
Strikeout %lg 22.0% · higher = better
George Kirby
19.9%
Ryan Weathers
25.2%
Chase %lg 28.5% · higher = better
George Kirby
34.8%
Ryan Weathers
28.9%
Hard-Hit % Allowedlg 40.0% · lower = better
George Kirby
40.3%
Ryan Weathers
40.6%
Barrel % Allowedlg 8.0% · lower = better
George Kirby
6.9%
Ryan Weathers
8.6%
xwOBA Allowedlg .315 · lower = better
George Kirby
.310
Ryan Weathers
.319
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
3.244.50
lg xERA 4.10
now 3.77
4.03
Ryan Weathers
3.244.50
lg xERA 4.10
now 3.52
4.22
WHIPlower is better
George Kirby
1.061.43
now 1.22
1.35
Ryan Weathers
1.061.43
now 1.14
1.25

Volume · rest of season
Strikeoutshigher is better
George Kirby
40100.60
now 59
11
Ryan Weathers
40100.60
now 75
15
Winshigher is better
George Kirby
.0007
now 5
11
Ryan Weathers
.0007
now 2
01

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

If you already own them — trade angle
Hold · steadyGeorge Kirby — hold.conf 0.60
Hold · leans sellRyan Weathers — hold.conf 0.60
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