MLB Daily DeltaWeek 19 · July 31, 2026
Portrait of Gavin Williams
Gavin Williams
CLE · P
Change to
Portrait of Zack Wheeler
Zack Wheeler
PHI · 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

Gavin Williams wins 2 (K, W); Zack Wheeler wins 2 (ERA, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Gavin Williams
97.2
Zack Wheeler
95.2
Swinging-Strike %lg 11.0% · higher = better
Gavin Williams
15.3%
Zack Wheeler
15.8%
Strikeout %lg 22.0% · higher = better
Gavin Williams
31.6%
Zack Wheeler
31.1%
Chase %lg 28.5% · higher = better
Gavin Williams
33.3%
Zack Wheeler
36.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Gavin Williams
49.2%
Zack Wheeler
35.1%
Barrel % Allowedlg 8.0% · lower = better
Gavin Williams
11.5%
Zack Wheeler
6.0%
xwOBA Allowedlg .315 · lower = better
Gavin Williams
.309
Zack Wheeler
.254
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
Gavin Williams
24.69
lg xERA 4.10
now 3.07
4.00
Zack Wheeler
24.69
lg xERA 4.10
now 2.27
2.66
WHIPlower is better
Gavin Williams
.9001.23
now 1.09
1.12
Zack Wheeler
.9001.23
now 0.85
1.05

Volume · rest of season
Strikeoutshigher is better
Gavin Williams
40107.60
now 88
54
Zack Wheeler
40107.60
now 40
39
Winshigher is better
Gavin Williams
110
now 8
37
Zack Wheeler
110
now 4
36

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

If you already own them — trade angle
Hold · steadyGavin Williams — hold.conf 0.60
BuyZack Wheeler — buy.conf 0.92
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