MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Jack Perkins
Jack Perkins
ATH · P
Change to
Luis Mey
CIN · P
Change to
Who's more valuable, rest of season

Luis Mey.

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

Luis Mey wins 2 categories (ERA, WHIP); Jack Perkins wins 1 (SV); 2 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jack Perkins
95.7
Luis Mey
97.7
Swinging-Strike %lg 11.0% · higher = better
Jack Perkins
12.8%
Luis Mey
13.8%
Strikeout %lg 22.0% · higher = better
Jack Perkins
25.2%
Luis Mey
32.2%
Chase %lg 28.5% · higher = better
Jack Perkins
33.5%
Luis Mey
23.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Jack Perkins
37.3%
Luis Mey
47.5%
Barrel % Allowedlg 8.0% · lower = better
Jack Perkins
8.8%
Luis Mey
8.2%
xwOBA Allowedlg .315 · lower = better
Jack Perkins
.311
Luis Mey
.313
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
3.93
Luis Mey
36.16
lg xERA 4.10
now 5.40
3.70
WHIPlower is better
Jack Perkins
1.071.70
now 1.21
1.35
Luis Mey
1.071.70
now 1.56
1.24

Volume · rest of season
Strikeoutshigher is better
Jack Perkins
4043.40
now 33
7
Luis Mey
4043.40
now 14
7
Winshigher is better
Jack Perkins
.0002.80
now 2
01
Luis Mey
.0002.80
now 0
00
Saveshigher is better
Jack Perkins
.0004.40
now 3
01
Luis Mey
.0004.40
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
Hold · wait & seeLuis Mey — hold.conf 0.50
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