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

Too close to call.

They split your categories 22, 1 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

Andrés Muñoz wins 2 (WHIP, W); Aroldis Chapman wins 2 (ERA, SV); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Andrés Muñoz
99.7
Aroldis Chapman
97.0
Swinging-Strike %lg 11.0% · higher = better
Andrés Muñoz
19.5%
Aroldis Chapman
15.8%
Strikeout %lg 22.0% · higher = better
Andrés Muñoz
38.2%
Aroldis Chapman
32.3%
Chase %lg 28.5% · higher = better
Andrés Muñoz
37.8%
Aroldis Chapman
32.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Andrés Muñoz
42.5%
Aroldis Chapman
38.3%
Barrel % Allowedlg 8.0% · lower = better
Andrés Muñoz
8.8%
Aroldis Chapman
7.0%
xwOBA Allowedlg .315 · lower = better
Andrés Muñoz
.277
Aroldis Chapman
.255
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
Andrés Muñoz
26.47
lg xERA 4.10
now 4.76
3.17
Aroldis Chapman
26.47
lg xERA 4.10
now 0.48
2.68
WHIPlower is better
Andrés Muñoz
.9001.45
now 1.28
1.12
Aroldis Chapman
.9001.45
now 0.86
1.24

Volume · rest of season
Strikeoutshigher is better
Andrés Muñoz
4046.20
now 35
7
Aroldis Chapman
4046.20
now 25
7
Winshigher is better
Andrés Muñoz
.0004.20
now 3
01
Aroldis Chapman
.0004.20
now 0
00
Saveshigher is better
Andrés Muñoz
.00016.40
now 9
12
Aroldis Chapman
.00016.40
now 12
24
If you already own them — trade angle
BuyAndrés Muñoz — buy.conf 0.88
BuyAroldis Chapman — buy.conf 0.92
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