MLB Daily DeltaWeek 27 · September 28, 2026
Portrait of José Alvarado
José Alvarado
PHI · 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 Alvarado wins 1 (ERA); Wandy Peralta wins 1 (WHIP); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
José Alvarado
97.2
Wandy Peralta
96.4
Swinging-Strike %lg 11.0% · higher = better
José Alvarado
12.4%
Wandy Peralta
11.4%
Strikeout %lg 22.0% · higher = better
José Alvarado
25.6%
Wandy Peralta
15.6%
Chase %lg 28.5% · higher = better
José Alvarado
31.7%
Wandy Peralta
33.2%
Hard-Hit % Allowedlg 40.0% · lower = better
José Alvarado
31.7%
Wandy Peralta
35.9%
Barrel % Allowedlg 8.0% · lower = better
José Alvarado
4.3%
Wandy Peralta
4.5%
xwOBA Allowedlg .315 · lower = better
José Alvarado
.312
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 Alvarado
26.73
lg xERA 4.10
now 5.59
3.97
Wandy Peralta
26.73
lg xERA 4.10
now 2.73
4.10
WHIPlower is better
José Alvarado
1.191.99
now 1.81
1.40
Wandy Peralta
1.191.99
now 1.44
1.37

Volume · rest of season
Strikeoutshigher is better
José Alvarado
4036.40
now 26
0
Wandy Peralta
4036.40
now 19
0
Winshigher is better
José Alvarado
.0001.48
now 1
0–0
Wandy Peralta
.0001.48
now 0
0–0

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

If you already own them — trade angle
Buy LowJosé Alvarado — buy low. The dip is a window to acquire.conf 0.90
Hold · leans sellWandy Peralta — hold.conf 0.60
Tweet