MLB Daily DeltaWeek 27 · September 27, 2026
Portrait of Jack Perkins
Jack Perkins
ATH · P
Change to
Javier Assad
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); Javier Assad 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
Javier Assad
93.5
Swinging-Strike %lg 11.0% · higher = better
Jack Perkins
12.7%
Javier Assad
7.1%
Strikeout %lg 22.0% · higher = better
Jack Perkins
25.2%
Javier Assad
16.7%
Chase %lg 28.5% · higher = better
Jack Perkins
33.7%
Javier Assad
23.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Jack Perkins
36.9%
Javier Assad
43.5%
Barrel % Allowedlg 8.0% · lower = better
Jack Perkins
8.5%
Javier Assad
6.7%
xwOBA Allowedlg .315 · lower = better
Jack Perkins
.309
Javier Assad
.324
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
3.126.67
lg xERA 4.10
now 5.46
3.91
Javier Assad
3.126.67
lg xERA 4.10
now 5.88
4.20
WHIPlower is better
Jack Perkins
1.141.40
now 1.21
1.33
Javier Assad
1.141.40
now 1.27
1.29

Volume · rest of season
Strikeoutshigher is better
Jack Perkins
4046.20
now 33
0
Javier Assad
4046.20
now 14
0
Winshigher is better
Jack Perkins
.0004.20
now 2
0–0
Javier Assad
.0004.20
now 3
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
Sell HighJavier Assad — sell high. His value is peaking; good time to trade him.conf 0.95
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