MLB Daily DeltaWeek 27 · September 27, 2026
Portrait of George Kirby
George Kirby
SEA · P
Change to
Jose Quintana
COL · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 1–1, 2 even. Take whoever fills a bigger need.

Head-to-head
K
◀
ERA
WHIP
▶
W
SV n/a

George Kirby wins 1 (ERA); Jose Quintana wins 1 (WHIP); 2 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
Jose Quintana
89.7
Swinging-Strike %lg 11.0% · higher = better
George Kirby
11.7%
Jose Quintana
9.9%
Strikeout %lg 22.0% · higher = better
George Kirby
20.0%
Jose Quintana
11.1%
Chase %lg 28.5% · higher = better
George Kirby
34.3%
Jose Quintana
32.2%
Hard-Hit % Allowedlg 40.0% · lower = better
George Kirby
40.1%
Jose Quintana
34.2%
Barrel % Allowedlg 8.0% · lower = better
George Kirby
6.6%
Jose Quintana
9.5%
xwOBA Allowedlg .315 · lower = better
George Kirby
.315
Jose Quintana
.359
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
3.175.87
lg xERA 4.10
now 3.77
4.17
Jose Quintana
3.175.87
lg xERA 4.10
now 5.27
4.40
WHIPlower is better
George Kirby
1.101.63
now 1.22
1.39
Jose Quintana
1.101.63
now 1.51
1.35

Volume · rest of season
Strikeoutshigher is better
George Kirby
4082.60
now 59
0
Jose Quintana
4082.60
now 20
0
Winshigher is better
George Kirby
.0007
now 5
0–0
Jose Quintana
.0007
now 2
0–0

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

If you already own them — trade angle
Hold · steadyGeorge Kirby — hold.conf 0.60
Hold · wait & seeJose Quintana — hold.conf 0.50
Tweet