MLB Daily DeltaWeek 27 · September 29, 2026
Elvis Alvarado
ATH · P
Change to
Portrait of Jack Perkins
Jack Perkins
ATH · 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

Elvis Alvarado wins 1 (WHIP); Jack Perkins 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
Elvis Alvarado
98.7
Jack Perkins
95.7
Swinging-Strike %lg 11.0% · higher = better
Elvis Alvarado
16.0%
Jack Perkins
13.1%
Strikeout %lg 22.0% · higher = better
Elvis Alvarado
28.4%
Jack Perkins
25.9%
Chase %lg 28.5% · higher = better
Elvis Alvarado
28.2%
Jack Perkins
34.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Elvis Alvarado
46.7%
Jack Perkins
36.7%
Barrel % Allowedlg 8.0% · lower = better
Elvis Alvarado
13.1%
Jack Perkins
8.8%
xwOBA Allowedlg .315 · lower = better
Elvis Alvarado
.322
Jack Perkins
.311
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
Elvis Alvarado
2.188.25
lg xERA 4.10
now 8.38
4.17
Jack Perkins
2.188.25
lg xERA 4.10
now 5.46
3.95
WHIPlower is better
Elvis Alvarado
.9502.12
now 1.86
1.30
Jack Perkins
.9502.12
now 1.21
1.33

Volume · rest of season
Strikeoutshigher is better
Elvis Alvarado
4046.20
now 9
0
Jack Perkins
4046.20
now 33
0
Winshigher is better
Elvis Alvarado
.0002.80
now 2
0–0
Jack Perkins
.0002.80
now 2
0–0

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

If you already own them — trade angle
Sell HighElvis Alvarado — sell high. His value is peaking; good time to trade him.conf 0.86
Buy LowJack Perkins — buy low. The dip is a window to acquire.conf 0.90
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