MLB Daily DeltaWeek 19 · July 30, 2026
Portrait of Luis Castillo
Luis Castillo
SEA · P
Change to
Robert Gasser
MIL · 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

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Luis Castillo
95.3
Robert Gasser
92.5
Swinging-Strike %lg 11.0% · higher = better
Luis Castillo
12.4%
Robert Gasser
11.7%
Strikeout %lg 22.0% · higher = better
Luis Castillo
19.4%
Robert Gasser
21.5%
Chase %lg 28.5% · higher = better
Luis Castillo
32.9%
Robert Gasser
29.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Luis Castillo
41.7%
Robert Gasser
30.4%
Barrel % Allowedlg 8.0% · lower = better
Luis Castillo
9.7%
Robert Gasser
6.4%
xwOBA Allowedlg .315 · lower = better
Luis Castillo
.337
Robert Gasser
.300
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
Luis Castillo
3.056.24
lg xERA 4.10
now 5.53
4.59
Robert Gasser
3.056.24
lg xERA 4.10
now 4.73
3.76
WHIPlower is better
Luis Castillo
1.141.54
now 1.45
1.34
Robert Gasser
1.141.54
now 1.43
1.23

Volume · rest of season
Strikeoutshigher is better
Luis Castillo
4073.60
now 56
49
Robert Gasser
4073.60
now 12
29
Winshigher is better
Luis Castillo
.0002.80
now 2
12
Robert Gasser
.0002.80
now 0
00

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

If you already own them — trade angle
SellLuis Castillo — sell.conf 0.78
BuyRobert Gasser — buy.conf 0.70
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