MLB Daily DeltaWeek 15 · July 5, 2026
Portrait of Jack Perkins
Jack Perkins
ATH · P
Change to
Portrait of José Fermin
José Fermin
LAA · P
Change to
Who's more valuable, rest of season

José Fermin.

He projects to help you in more roto categories the rest of the way — ERA, WHIP, and wins. Jack Perkins’s box score looks better right now, but it’s built on luck that won’t hold.

Head-to-head
K
ERA
WHIP
W
SV

José Fermin wins 3 categories (ERA, WHIP, W); Jack Perkins wins 2 (K, SV).

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jack Perkins
96.1
José Fermin
96.3
Swinging-Strike %lg 11.0% · higher = better
Jack Perkins
13.6%
José Fermin
15.1%
Strikeout %lg 22.0% · higher = better
Jack Perkins
27.9%
José Fermin
25.0%
Chase %lg 28.5% · higher = better
Jack Perkins
34.8%
José Fermin
33.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Jack Perkins
38.4%
José Fermin
46.8%
Barrel % Allowedlg 8.0% · lower = better
Jack Perkins
7.2%
José Fermin
8.1%
xwOBA Allowedlg .315 · lower = better
Jack Perkins
.313
José Fermin
.334
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
36.16
lg xERA 4.10
now 5.46
3.94
José Fermin
36.16
lg xERA 4.10
now 5.40
3.70
WHIPlower is better
Jack Perkins
1.031.85
now 1.21
1.27
José Fermin
1.031.85
now 1.67
1.24

Volume · rest of season
Strikeoutshigher is better
Jack Perkins
4041.80
now 33
35
José Fermin
4041.80
now 18
28
Winshigher is better
Jack Perkins
.0006.60
now 2
13
José Fermin
.0006.60
now 2
25
Saveshigher is better
Jack Perkins
.0005.60
now 3
24
José Fermin
.0005.60
now 0
0
If you already own them — trade angle
Buy LowJack Perkins — buy low. The dip is a window to acquire.conf 0.90
Sell HighJosé Fermin — sell high. His value is peaking; good time to trade him.conf 0.95
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