MLB Daily DeltaWeek 27 · September 27, 2026
Portrait of José Fermin
José Fermin
LAA · P
Change to
Portrait of Wandy Peralta
Wandy Peralta
SD · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 1–1, 2 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
▶
◀
WHIP
W
SV n/a

José Fermin wins 1 (WHIP); Wandy Peralta wins 1 (ERA); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
José Fermin
96.6
Wandy Peralta
96.4
Swinging-Strike %lg 11.0% · higher = better
José Fermin
14.7%
Wandy Peralta
11.4%
Strikeout %lg 22.0% · higher = better
José Fermin
26.1%
Wandy Peralta
15.6%
Chase %lg 28.5% · higher = better
José Fermin
32.1%
Wandy Peralta
33.2%
Hard-Hit % Allowedlg 40.0% · lower = better
José Fermin
42.9%
Wandy Peralta
35.9%
Barrel % Allowedlg 8.0% · lower = better
José Fermin
7.5%
Wandy Peralta
4.5%
xwOBA Allowedlg .315 · lower = better
José Fermin
.328
Wandy Peralta
.319
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
José Fermin
26.47
lg xERA 4.10
now 5.40
4.29
Wandy Peralta
26.47
lg xERA 4.10
now 2.73
4.10
WHIPlower is better
José Fermin
1.191.81
now 1.67
1.33
Wandy Peralta
1.191.81
now 1.44
1.37

Volume · rest of season
Strikeoutshigher is better
José Fermin
4026.60
now 18
0
Wandy Peralta
4026.60
now 19
0
Winshigher is better
José Fermin
.0002.80
now 2
0–0
Wandy Peralta
.0002.80
now 0
0–0

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

If you already own them — trade angle
SellJosé Fermin — sell.conf 0.70
Hold · leans sellWandy Peralta — hold.conf 0.60
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