MLB Daily DeltaWeek 27 · September 27, 2026
Portrait of Aroldis Chapman
Aroldis Chapman
BOS · P
Change to
Portrait of Didier Fuentes
Didier Fuentes
ATL · 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

Aroldis Chapman wins 1 (ERA); Didier Fuentes 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
Aroldis Chapman
96.9
Didier Fuentes
97.3
Swinging-Strike %lg 11.0% · higher = better
Aroldis Chapman
15.8%
Didier Fuentes
16.0%
Strikeout %lg 22.0% · higher = better
Aroldis Chapman
33.3%
Didier Fuentes
31.0%
Chase %lg 28.5% · higher = better
Aroldis Chapman
33.1%
Didier Fuentes
31.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Aroldis Chapman
38.1%
Didier Fuentes
34.6%
Barrel % Allowedlg 8.0% · lower = better
Aroldis Chapman
6.8%
Didier Fuentes
6.6%
xwOBA Allowedlg .315 · lower = better
Aroldis Chapman
.252
Didier Fuentes
.275
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
Aroldis Chapman
24.22
lg xERA 4.10
now 0.48
2.64
Didier Fuentes
24.22
lg xERA 4.10
now 2.78
3.15
WHIPlower is better
Aroldis Chapman
.9001.41
now 0.86
1.25
Didier Fuentes
.9001.41
now 1.10
1.16

Volume · rest of season
Strikeoutshigher is better
Aroldis Chapman
4037.80
now 25
0
Didier Fuentes
4037.80
now 27
0
Winshigher is better
Aroldis Chapman
.0005.60
now 0
0–0
Didier Fuentes
.0005.60
now 4
0–0

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

If you already own them — trade angle
BuyAroldis Chapman — buy.conf 0.92
BuyDidier Fuentes — buy.conf 0.89
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