MLB Daily DeltaWeek 27 · September 29, 2026
Portrait of Devin Williams
Devin Williams
NYM · P
Change to
Garrett Whitlock
BOS · 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

Devin Williams wins 0 (none); Garrett Whitlock 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
Devin Williams
93.9
Garrett Whitlock
94.9
Swinging-Strike %lg 11.0% · higher = better
Devin Williams
17.5%
Garrett Whitlock
18.1%
Strikeout %lg 22.0% · higher = better
Devin Williams
28.3%
Garrett Whitlock
29.8%
Chase %lg 28.5% · higher = better
Devin Williams
38.6%
Garrett Whitlock
42.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Devin Williams
29.7%
Garrett Whitlock
33.8%
Barrel % Allowedlg 8.0% · lower = better
Devin Williams
4.5%
Garrett Whitlock
3.8%
xwOBA Allowedlg .315 · lower = better
Devin Williams
.278
Garrett Whitlock
.251
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
Devin Williams
2.116.34
lg xERA 4.10
now 5.40
3.70
Garrett Whitlock
2.116.34
lg xERA 4.10
now 3.05
3.69
WHIPlower is better
Devin Williams
.9301.73
now 1.55
1.24
Garrett Whitlock
.9301.73
now 1.11
1.24

Volume · rest of season
Strikeoutshigher is better
Devin Williams
4043.40
now 31
0
Garrett Whitlock
4043.40
now 26
0
Winshigher is better
Devin Williams
.0004.20
now 3
0–0
Garrett Whitlock
.0004.20
now 3
0–0

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

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