MLB Daily DeltaWeek 15 · July 7, 2026
Portrait of Jack Perkins
Jack Perkins
ATH · P
Change to
Ryan Walker
SF · P
Change to
Who's more valuable, rest of season

Ryan Walker.

He projects to help you in more roto categories the rest of the way — ERA, WHIP, and saves. 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

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jack Perkins
96.1
Ryan Walker
94.1
Swinging-Strike %lg 11.0% · higher = better
Jack Perkins
13.6%
Ryan Walker
6.5%
Strikeout %lg 22.0% · higher = better
Jack Perkins
27.9%
Ryan Walker
16.7%
Chase %lg 28.5% · higher = better
Jack Perkins
34.8%
Ryan Walker
26.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Jack Perkins
38.4%
Ryan Walker
33.8%
Barrel % Allowedlg 8.0% · lower = better
Jack Perkins
7.2%
Ryan Walker
5.0%
xwOBA Allowedlg .315 · lower = better
Jack Perkins
.313
Ryan Walker
.314
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
2.607.56
lg xERA 4.10
now 5.46
3.94
Ryan Walker
2.607.56
lg xERA 4.10
now 6.46
3.70
WHIPlower is better
Jack Perkins
.9402.16
now 1.21
1.27
Ryan Walker
.9402.16
now 1.89
1.24

Volume · rest of season
Strikeoutshigher is better
Jack Perkins
4042
now 33
34
Ryan Walker
4042
now 14
29
Winshigher is better
Jack Perkins
.0004.20
now 2
13
Ryan Walker
.0004.20
now 0
00
Saveshigher is better
Jack Perkins
.4007.60
now 3
24
Ryan Walker
.4007.60
now 3
36
If you already own them — trade angle
Buy LowJack Perkins — buy low. The dip is a window to acquire.conf 0.90
Buy LowRyan Walker — buy low. The dip is a window to acquire.conf 0.90
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