MLB Daily DeltaWeek 19 · July 31, 2026
Portrait of Blake Treinen
Blake Treinen
LAD · P
Change to
Portrait of Jack Perkins
Jack Perkins
ATH · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22, 1 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

Blake Treinen wins 2 (ERA, WHIP); Jack Perkins wins 2 (K, SV); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Blake Treinen
94.6
Jack Perkins
95.9
Swinging-Strike %lg 11.0% · higher = better
Blake Treinen
12.3%
Jack Perkins
13.4%
Strikeout %lg 22.0% · higher = better
Blake Treinen
25.0%
Jack Perkins
26.1%
Chase %lg 28.5% · higher = better
Blake Treinen
35.5%
Jack Perkins
33.7%
Hard-Hit % Allowedlg 40.0% · lower = better
Blake Treinen
42.2%
Jack Perkins
37.6%
Barrel % Allowedlg 8.0% · lower = better
Blake Treinen
12.5%
Jack Perkins
7.3%
xwOBA Allowedlg .315 · lower = better
Blake Treinen
.348
Jack Perkins
.311
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
Blake Treinen
2.106.42
lg xERA 4.10
now 3.06
3.70
Jack Perkins
2.106.42
lg xERA 4.10
now 5.46
3.93
WHIPlower is better
Blake Treinen
1.141.36
now 1.25
1.24
Jack Perkins
1.141.36
now 1.21
1.29

Volume · rest of season
Strikeoutshigher is better
Blake Treinen
4039.80
now 18
16
Jack Perkins
4039.80
now 33
24
Winshigher is better
Blake Treinen
.0002.80
now 1
01
Jack Perkins
.0002.80
now 2
12
Saveshigher is better
Blake Treinen
.0004.40
now 1
02
Jack Perkins
.0004.40
now 3
23
If you already own them — trade angle
Hold · wait & seeBlake Treinen — hold.conf 0.50
Hold · steadyJack Perkins — hold.conf 0.60
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