MLB Daily DeltaWeek 18 · July 28, 2026
Portrait of Blas Castaño
Blas Castaño
COL · P
Change to
Seth Johnson
PHI · P
Change to
Who's more valuable, rest of season

Blas Castaño.

He projects to help you in more roto categories the rest of the way — strikeouts.

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

Blas Castaño wins 1 categories (K); Seth Johnson wins 0 (none); 3 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
Seth Johnson
97.9
Swinging-Strike %lg 11.0% · higher = better
Blas Castaño
9.0%
Seth Johnson
13.4%
Strikeout %lg 22.0% · higher = better
Blas Castaño
20.0%
Seth Johnson
26.3%
Chase %lg 28.5% · higher = better
Blas Castaño
28.1%
Seth Johnson
22.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Blas Castaño
50.0%
Seth Johnson
38.1%
Barrel % Allowedlg 8.0% · lower = better
Blas Castaño
10.0%
Seth Johnson
9.5%
xwOBA Allowedlg .315 · lower = better
Blas Castaño
.367
Seth Johnson
.312
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
2.866.63
lg xERA 4.10
now 4.91
3.70
Seth Johnson
2.866.63
lg xERA 4.10
now 5.79
3.70
WHIPlower is better
Blas Castaño
1.051.90
now 1.45
1.24
Seth Johnson
1.051.90
now 1.71
1.24

Volume · rest of season
Strikeoutshigher is better
Blas Castaño
4027
now 10
21
Seth Johnson
4027
now 6
20
Winshigher is better
Blas Castaño
.000.480
now 0
00
Seth Johnson
.000.480
now 0
00

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

If you already own them — trade angle
Hold · wait & seeBlas Castaño — hold.conf 0.50
Buy LowSeth Johnson — buy low. The dip is a window to acquire.conf 0.90
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