MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Aroldis Chapman
Aroldis Chapman
BOS · P
Change to
Portrait of Jhoan Duran
Jhoan Duran
PHI · P
Change to
Who's more valuable, rest of season

Jhoan Duran.

He projects to help you in more roto categories the rest of the way — ERA and WHIP.

Head-to-head
K
ERA
WHIP
W
SV

Jhoan Duran wins 2 categories (ERA, WHIP); Aroldis Chapman wins 1 (K); 2 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Aroldis Chapman
97.0
Jhoan Duran
100.4
Swinging-Strike %lg 11.0% · higher = better
Aroldis Chapman
15.8%
Jhoan Duran
18.7%
Strikeout %lg 22.0% · higher = better
Aroldis Chapman
32.3%
Jhoan Duran
34.1%
Chase %lg 28.5% · higher = better
Aroldis Chapman
32.6%
Jhoan Duran
35.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Aroldis Chapman
38.3%
Jhoan Duran
40.5%
Barrel % Allowedlg 8.0% · lower = better
Aroldis Chapman
7.0%
Jhoan Duran
3.2%
xwOBA Allowedlg .315 · lower = better
Aroldis Chapman
.255
Jhoan Duran
.226
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
23.56
lg xERA 4.10
now 0.48
2.68
Jhoan Duran
23.56
lg xERA 4.10
now 1.53
2.11
WHIPlower is better
Aroldis Chapman
.9001.39
now 0.86
1.24
Jhoan Duran
.9001.39
now 0.96
1.03

Volume · rest of season
Strikeoutshigher is better
Aroldis Chapman
4034
now 25
7
Jhoan Duran
4034
now 26
6
Winshigher is better
Aroldis Chapman
.0001.48
now 0
00
Jhoan Duran
.0001.48
now 1
00
Saveshigher is better
Aroldis Chapman
.00016
now 12
24
Jhoan Duran
.00016
now 12
24
If you already own them — trade angle
BuyAroldis Chapman — buy.conf 0.92
BuyJhoan Duran — buy.conf 0.92
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