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

Too close to call.

They split your categories 0–0, 4 even. Take whoever fills a bigger need.

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

Blas Castaño wins 0 (none); Justin Sterner wins 0 (none); 4 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
Justin Sterner
93.5
Swinging-Strike %lg 11.0% · higher = better
Blas Castaño
8.7%
Justin Sterner
15.6%
Strikeout %lg 22.0% · higher = better
Blas Castaño
18.9%
Justin Sterner
21.7%
Chase %lg 28.5% · higher = better
Blas Castaño
28.7%
Justin Sterner
33.9%
Hard-Hit % Allowedlg 40.0% · lower = better
Blas Castaño
48.1%
Justin Sterner
45.0%
Barrel % Allowedlg 8.0% · lower = better
Blas Castaño
8.9%
Justin Sterner
9.2%
xwOBA Allowedlg .315 · lower = better
Blas Castaño
.367
Justin Sterner
.292
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
2.995.46
lg xERA 4.10
now 4.91
3.70
Justin Sterner
2.995.46
lg xERA 4.10
now 3.54
3.69
WHIPlower is better
Blas Castaño
.9701.59
now 1.45
1.24
Justin Sterner
.9701.59
now 1.11
1.24

Volume · rest of season
Strikeoutshigher is better
Blas Castaño
4036.40
now 10
0
Justin Sterner
4036.40
now 26
0
Winshigher is better
Blas Castaño
.0002.80
now 0
0–0
Justin Sterner
.0002.80
now 2
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
Hold · wait & seeJustin Sterner — hold.conf 0.50
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