MLB Daily DeltaWeek 25 · September 10, 2026
Cionel Pérez
NYM · P
Change to
Jack Dreyer
LAD · P
Change to
Who's more valuable, rest of season

Jack Dreyer.

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

Head-to-head
K
ERA
WHIP
W
SV n/a

Jack Dreyer wins 3 categories (K, ERA, WHIP); Cionel Pérez wins 1 (W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Cionel Pérez
96.9
Jack Dreyer
94.1
Swinging-Strike %lg 11.0% · higher = better
Cionel Pérez
11.6%
Jack Dreyer
13.8%
Strikeout %lg 22.0% · higher = better
Cionel Pérez
22.7%
Jack Dreyer
29.4%
Chase %lg 28.5% · higher = better
Cionel Pérez
30.0%
Jack Dreyer
32.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Cionel Pérez
50.0%
Jack Dreyer
42.3%
Barrel % Allowedlg 8.0% · lower = better
Cionel Pérez
12.9%
Jack Dreyer
7.0%
xwOBA Allowedlg .315 · lower = better
Cionel Pérez
.346
Jack Dreyer
.279
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
Cionel Pérez
27.04
lg xERA 4.10
now 5.82
3.70
Jack Dreyer
27.04
lg xERA 4.10
now 2.78
3.22
WHIPlower is better
Cionel Pérez
.9001.82
now 1.59
1.24
Jack Dreyer
.9001.82
now 1.01
1.22

Volume · rest of season
Strikeoutshigher is better
Cionel Pérez
4032.80
now 10
2
Jack Dreyer
4032.80
now 24
5
Winshigher is better
Cionel Pérez
.0002.80
now 2
01
Jack Dreyer
.0002.80
now 2
01

SV — not applicable. Both pitch out of the rotation.

If you already own them — trade angle
Hold · wait & seeCionel Pérez — hold.conf 0.50
BuyJack Dreyer — buy.conf 0.86
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