MLB Daily DeltaWeek 18 · July 27, 2026
Portrait of Austin Warren
Austin Warren
NYM · P
Change to
Cionel Pérez
NYM · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 11, 2 even. Take whoever fills a bigger need.

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

Austin Warren wins 1 (K); Cionel Pérez wins 1 (W); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Austin Warren
93.9
Cionel Pérez
96.8
Swinging-Strike %lg 11.0% · higher = better
Austin Warren
10.7%
Cionel Pérez
11.3%
Strikeout %lg 22.0% · higher = better
Austin Warren
23.6%
Cionel Pérez
21.5%
Chase %lg 28.5% · higher = better
Austin Warren
26.8%
Cionel Pérez
30.9%
Hard-Hit % Allowedlg 40.0% · lower = better
Austin Warren
42.4%
Cionel Pérez
51.3%
Barrel % Allowedlg 8.0% · lower = better
Austin Warren
13.1%
Cionel Pérez
12.6%
xwOBA Allowedlg .315 · lower = better
Austin Warren
.350
Cionel Pérez
.353
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
Austin Warren
27.62
lg xERA 4.10
now 1.33
3.70
Cionel Pérez
27.62
lg xERA 4.10
now 5.82
3.70
WHIPlower is better
Austin Warren
.9501.77
now 1.13
1.24
Cionel Pérez
.9501.77
now 1.59
1.24

Volume · rest of season
Strikeoutshigher is better
Austin Warren
4027.60
now 22
20
Cionel Pérez
4027.60
now 10
10
Winshigher is better
Austin Warren
.2003.80
now 1
11
Cionel Pérez
.2003.80
now 2
13

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

If you already own them — trade angle
Hold · wait & seeAustin Warren — hold.conf 0.50
Hold · wait & seeCionel Pérez — hold.conf 0.50
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