MLB Daily DeltaWeek 20 · August 6, 2026
Portrait of Luis Castillo
Luis Castillo
CWS · P
Change to
Portrait of Steven Matz
Steven Matz
TB · 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, ERA, and WHIP. Steven Matz’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 3 categories (K, ERA, WHIP); Steven Matz wins 1 (W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Luis Castillo
95.3
Steven Matz
93.4
Swinging-Strike %lg 11.0% · higher = better
Luis Castillo
12.4%
Steven Matz
10.1%
Strikeout %lg 22.0% · higher = better
Luis Castillo
19.4%
Steven Matz
18.0%
Chase %lg 28.5% · higher = better
Luis Castillo
32.9%
Steven Matz
27.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Luis Castillo
41.7%
Steven Matz
35.3%
Barrel % Allowedlg 8.0% · lower = better
Luis Castillo
9.7%
Steven Matz
12.0%
xwOBA Allowedlg .315 · lower = better
Luis Castillo
.337
Steven Matz
.351
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
4.205.91
lg xERA 4.10
now 5.53
4.58
Steven Matz
4.205.91
lg xERA 4.10
now 4.67
4.89
WHIPlower is better
Luis Castillo
1.161.53
now 1.45
1.34
Steven Matz
1.161.53
now 1.24
1.35

Volume · rest of season
Strikeoutshigher is better
Luis Castillo
4065.60
now 56
43
Steven Matz
4065.60
now 35
32
Winshigher is better
Luis Castillo
.0006.60
now 2
12
Steven Matz
.0006.60
now 4
25

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

If you already own them — trade angle
SellLuis Castillo — sell.conf 0.77
SellSteven Matz — sell.conf 0.90
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