MLB Daily DeltaWeek 27 · September 30, 2026
Portrait of Blas Castaño
Blas Castaño
COL · P
Change to
Portrait of Mason Miller
Mason Miller
SD · P
Change to
Who's more valuable, rest of season

Mason Miller.

He projects to help you in more roto categories the rest of the way — ERA and WHIP.

Head-to-head
K
ERA
▶
WHIP
▶
W
SV n/a

Mason Miller wins 2 categories (ERA, WHIP); Blas Castaño wins 0 (none); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Blas Castaño
94.5
Mason Miller
101.4
Swinging-Strike %lg 11.0% · higher = better
Blas Castaño
8.7%
Mason Miller
21.4%
Strikeout %lg 22.0% · higher = better
Blas Castaño
18.9%
Mason Miller
47.4%
Chase %lg 28.5% · higher = better
Blas Castaño
28.7%
Mason Miller
36.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Blas Castaño
48.1%
Mason Miller
28.7%
Barrel % Allowedlg 8.0% · lower = better
Blas Castaño
8.9%
Mason Miller
7.0%
xwOBA Allowedlg .315 · lower = better
Blas Castaño
.367
Mason Miller
.201
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
Blas Castaño
26.59
lg xERA 4.10
now 4.91
3.70
Mason Miller
26.59
lg xERA 4.10
now 0.72
1.70
WHIPlower is better
Blas Castaño
.9001.69
now 1.45
1.24
Mason Miller
.9001.69
now 0.84
0.99

Volume · rest of season
Strikeoutshigher is better
Blas Castaño
4068.60
now 10
0
Mason Miller
4068.60
now 49
0
Winshigher is better
Blas Castaño
.0001.48
now 0
0–0
Mason Miller
.0001.48
now 1
0–0

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

If you already own them — trade angle
Hold · wait & seeBlas Castaño — hold.conf 0.50
BuyMason Miller — buy.conf 0.92
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