MLB Daily DeltaWeek 17 · July 19, 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 11, 3 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

Andrés Muñoz wins 1 (W); Aroldis Chapman wins 1 (SV); 3 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Andrés Muñoz
99.3
Aroldis Chapman
96.9
Swinging-Strike %lg 11.0% · higher = better
Andrés Muñoz
18.9%
Aroldis Chapman
15.8%
Strikeout %lg 22.0% · higher = better
Andrés Muñoz
34.5%
Aroldis Chapman
30.6%
Chase %lg 28.5% · higher = better
Andrés Muñoz
36.6%
Aroldis Chapman
35.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Andrés Muñoz
42.0%
Aroldis Chapman
38.4%
Barrel % Allowedlg 8.0% · lower = better
Andrés Muñoz
8.6%
Aroldis Chapman
8.2%
xwOBA Allowedlg .315 · lower = better
Andrés Muñoz
.300
Aroldis Chapman
.256
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
3.70
Aroldis Chapman
26.47
lg xERA 4.10
now 0.48
3.70
WHIPlower is better
Andrés Muñoz
.9001.45
now 1.28
1.24
Aroldis Chapman
.9001.45
now 0.86
1.24

Volume · rest of season
Strikeoutshigher is better
Andrés Muñoz
4040.60
now 35
31
Aroldis Chapman
4040.60
now 25
31
Winshigher is better
Andrés Muñoz
.0005.60
now 3
24
Aroldis Chapman
.0005.60
now 0
00
Saveshigher is better
Andrés Muñoz
1.6021.40
now 9
611
Aroldis Chapman
1.6021.40
now 12
917
If you already own them — trade angle
Buy LowAndrés Muñoz — buy low. The dip is a window to acquire.conf 0.74
Hold · wait & seeAroldis Chapman — hold.conf 0.50
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