MLB Daily DeltaWeek 20 · August 9, 2026
Portrait of Luis Castillo
Luis Castillo
CWS · P
Change to
Portrait of Luis Severino
Luis Severino
ATH · P
Change to
Who's more valuable, rest of season

Luis Castillo.

He projects to help you in more roto categories the rest of the way — strikeouts and WHIP. Luis Severino’s box score looks better right now, but the luck-stripped projection flips it.

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

Luis Castillo wins 2 categories (K, WHIP); Luis Severino wins 1 (ERA); 1 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Luis Castillo
95.3
Luis Severino
96.9
Swinging-Strike %lg 11.0% · higher = better
Luis Castillo
12.6%
Luis Severino
10.9%
Strikeout %lg 22.0% · higher = better
Luis Castillo
19.7%
Luis Severino
24.0%
Chase %lg 28.5% · higher = better
Luis Castillo
32.4%
Luis Severino
31.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Luis Castillo
41.4%
Luis Severino
38.7%
Barrel % Allowedlg 8.0% · lower = better
Luis Castillo
9.7%
Luis Severino
8.7%
xwOBA Allowedlg .315 · lower = better
Luis Castillo
.337
Luis Severino
.318
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
3.616.08
lg xERA 4.10
now 5.53
4.57
Luis Severino
3.616.08
lg xERA 4.10
now 4.16
4.19
WHIPlower is better
Luis Castillo
1.281.54
now 1.45
1.35
Luis Severino
1.281.54
now 1.47
1.41

Volume · rest of season
Strikeoutshigher is better
Luis Castillo
4075.40
now 56
40
Luis Severino
4075.40
now 65
39
Winshigher is better
Luis Castillo
.5202.48
now 2
12
Luis Severino
.5202.48
now 2
12

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

If you already own them — trade angle
SellLuis Castillo — sell.conf 0.77
Hold · steadyLuis Severino — hold.conf 0.60
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