MLB Daily DeltaWeek 27 · September 27, 2026
Brycen Mautz
STL · 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

Brycen Mautz 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
Brycen Mautz
93.5
Devin Williams
93.9
Swinging-Strike %lg 11.0% · higher = better
Brycen Mautz
13.9%
Devin Williams
17.8%
Strikeout %lg 22.0% · higher = better
Brycen Mautz
25.3%
Devin Williams
28.7%
Chase %lg 28.5% · higher = better
Brycen Mautz
23.3%
Devin Williams
39.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Brycen Mautz
30.2%
Devin Williams
29.6%
Barrel % Allowedlg 8.0% · lower = better
Brycen Mautz
9.3%
Devin Williams
4.6%
xwOBA Allowedlg .315 · lower = better
Brycen Mautz
.357
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
Brycen Mautz
28.25
lg xERA 4.10
now 9.00
3.70
Devin Williams
28.25
lg xERA 4.10
now 5.40
3.70
WHIPlower is better
Brycen Mautz
.9402.30
now 2.00
1.24
Devin Williams
.9402.30
now 1.55
1.24

Volume · rest of season
Strikeoutshigher is better
Brycen Mautz
4043.40
now 10
0
Devin Williams
4043.40
now 31
0
Winshigher is better
Brycen Mautz
.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 & seeBrycen Mautz — hold.conf 0.50
Buy LowDevin Williams — buy low. The dip is a window to acquire.conf 0.90
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