MLB Daily DeltaWeek 27 · September 27, 2026
Brandon Williamson
CIN · P
Change to
Portrait of Merrill Kelly
Merrill Kelly
AZ · 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

Brandon Williamson wins 1 (ERA); Merrill Kelly 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
Brandon Williamson
92.8
Merrill Kelly
92.1
Swinging-Strike %lg 11.0% · higher = better
Brandon Williamson
10.6%
Merrill Kelly
10.7%
Strikeout %lg 22.0% · higher = better
Brandon Williamson
15.3%
Merrill Kelly
16.1%
Chase %lg 28.5% · higher = better
Brandon Williamson
24.8%
Merrill Kelly
35.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Brandon Williamson
41.7%
Merrill Kelly
41.5%
Barrel % Allowedlg 8.0% · lower = better
Brandon Williamson
9.3%
Merrill Kelly
11.0%
xwOBA Allowedlg .315 · lower = better
Brandon Williamson
.365
Merrill Kelly
.377
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
Brandon Williamson
4.646.53
lg xERA 4.10
now 6.11
5.25
Merrill Kelly
4.646.53
lg xERA 4.10
now 5.06
5.56
WHIPlower is better
Brandon Williamson
1.351.72
now 1.64
1.52
Merrill Kelly
1.351.72
now 1.46
1.43

Volume · rest of season
Strikeoutshigher is better
Brandon Williamson
4046.20
now 19
0
Merrill Kelly
4046.20
now 33
0
Winshigher is better
Brandon Williamson
.0007
now 2
0–0
Merrill Kelly
.0007
now 5
0–0

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

If you already own them — trade angle
Sell HighBrandon Williamson — sell high. His value is peaking; good time to trade him.conf 0.95
SellMerrill Kelly — sell.conf 0.90
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