MLB Daily DeltaWeek 27 · September 27, 2026
Antwone Kelly
PIT · P
Change to
Portrait of Devin Williams
Devin Williams
NYM · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 0–0, 4 even. Take whoever fills a bigger need.

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

Antwone Kelly wins 0 (none); Devin Williams wins 0 (none); 4 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Antwone Kelly
98.8
Devin Williams
93.9
Swinging-Strike %lg 11.0% · higher = better
Antwone Kelly
8.7%
Devin Williams
17.8%
Strikeout %lg 22.0% · higher = better
Antwone Kelly
16.9%
Devin Williams
28.7%
Chase %lg 28.5% · higher = better
Antwone Kelly
26.1%
Devin Williams
39.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Antwone Kelly
41.2%
Devin Williams
29.6%
Barrel % Allowedlg 8.0% · lower = better
Antwone Kelly
3.9%
Devin Williams
4.6%
xwOBA Allowedlg .315 · lower = better
Antwone Kelly
.334
Devin Williams
.282
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
Antwone Kelly
2.108.25
lg xERA 4.10
now 7.71
3.70
Devin Williams
2.108.25
lg xERA 4.10
now 5.40
3.70
WHIPlower is better
Antwone Kelly
1.121.67
now 1.29
1.24
Devin Williams
1.121.67
now 1.55
1.24

Volume · rest of season
Strikeoutshigher is better
Antwone Kelly
4043.40
now 1
0
Devin Williams
4043.40
now 31
0
Winshigher is better
Antwone Kelly
.0004.20
now 0
0–0
Devin Williams
.0004.20
now 3
0–0

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

If you already own them — trade angle
Hold · wait & seeAntwone Kelly — hold.conf 0.50
Buy LowDevin Williams — buy low. The dip is a window to acquire.conf 0.90
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