MLB Daily DeltaWeek 27 · September 27, 2026
Portrait of Jack Perkins
Jack Perkins
ATH · P
Change to
Portrait of Jacob Webb
Jacob Webb
CHC · 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

Jack Perkins wins 1 (ERA); Jacob Webb 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
Jack Perkins
95.7
Jacob Webb
94.2
Swinging-Strike %lg 11.0% · higher = better
Jack Perkins
12.7%
Jacob Webb
16.6%
Strikeout %lg 22.0% · higher = better
Jack Perkins
25.2%
Jacob Webb
25.6%
Chase %lg 28.5% · higher = better
Jack Perkins
33.7%
Jacob Webb
32.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Jack Perkins
36.9%
Jacob Webb
41.5%
Barrel % Allowedlg 8.0% · lower = better
Jack Perkins
8.5%
Jacob Webb
7.7%
xwOBA Allowedlg .315 · lower = better
Jack Perkins
.309
Jacob Webb
.322
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
Jack Perkins
26.62
lg xERA 4.10
now 5.46
3.91
Jacob Webb
26.62
lg xERA 4.10
now 2.55
4.16
WHIPlower is better
Jack Perkins
1.141.41
now 1.21
1.33
Jacob Webb
1.141.41
now 1.34
1.28

Volume · rest of season
Strikeoutshigher is better
Jack Perkins
4046.20
now 33
0
Jacob Webb
4046.20
now 31
0
Winshigher is better
Jack Perkins
.0002.80
now 2
0–0
Jacob Webb
.0002.80
now 1
0–0

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

If you already own them — trade angle
Buy LowJack Perkins — buy low. The dip is a window to acquire.conf 0.90
SellJacob Webb — sell.conf 0.64
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