MLB Daily DeltaWeek 18 · July 24, 2026
Germán Márquez
SD · P
Change to
Portrait of Luis Castillo
Luis Castillo
SEA · P
Change to
Who's more valuable, rest of season

Too close to call.

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

Head-to-head
K
ERA
WHIP
W
SV n/a

Germán Márquez wins 2 (ERA, W); Luis Castillo wins 2 (K, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Germán Márquez
94.7
Luis Castillo
95.3
Swinging-Strike %lg 11.0% · higher = better
Germán Márquez
9.6%
Luis Castillo
12.4%
Strikeout %lg 22.0% · higher = better
Germán Márquez
15.1%
Luis Castillo
20.1%
Chase %lg 28.5% · higher = better
Germán Márquez
25.8%
Luis Castillo
32.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Germán Márquez
45.2%
Luis Castillo
41.1%
Barrel % Allowedlg 8.0% · lower = better
Germán Márquez
9.6%
Luis Castillo
9.4%
xwOBA Allowedlg .315 · lower = better
Germán Márquez
.365
Luis Castillo
.323
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
Germán Márquez
3.656.36
lg xERA 4.10
now 5.76
4.25
Luis Castillo
3.656.36
lg xERA 4.10
now 5.53
4.29
WHIPlower is better
Germán Márquez
1.251.52
now 1.45
1.33
Luis Castillo
1.251.52
now 1.45
1.32

Volume · rest of season
Strikeoutshigher is better
Germán Márquez
4070.80
now 19
35
Luis Castillo
4070.80
now 56
54
Winshigher is better
Germán Márquez
.0008
now 3
36
Luis Castillo
.0008
now 2
12

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

If you already own them — trade angle
Sell HighGermán Márquez — sell high. His value is peaking; good time to trade him.conf 0.78
SellLuis Castillo — sell.conf 0.64
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