MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Blas Castaño
Blas Castaño
COL · P
Change to
Portrait of Shawn Armstrong
Shawn Armstrong
CLE · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 00, 4 even. Take whoever fills a bigger need.

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

Blas Castaño wins 0 (none); Shawn Armstrong 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
94.6
Shawn Armstrong
93.5
Swinging-Strike %lg 11.0% · higher = better
Blas Castaño
8.9%
Shawn Armstrong
11.7%
Strikeout %lg 22.0% · higher = better
Blas Castaño
19.4%
Shawn Armstrong
22.6%
Chase %lg 28.5% · higher = better
Blas Castaño
29.1%
Shawn Armstrong
24.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Blas Castaño
47.1%
Shawn Armstrong
34.8%
Barrel % Allowedlg 8.0% · lower = better
Blas Castaño
8.6%
Shawn Armstrong
6.5%
xwOBA Allowedlg .315 · lower = better
Blas Castaño
.361
Shawn Armstrong
.308
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
3.085.43
lg xERA 4.10
now 4.91
3.70
Shawn Armstrong
3.085.43
lg xERA 4.10
now 3.60
3.70
WHIPlower is better
Blas Castaño
1.161.53
now 1.45
1.24
Shawn Armstrong
1.161.53
now 1.33
1.24

Volume · rest of season
Strikeoutshigher is better
Blas Castaño
4024.60
now 10
6
Shawn Armstrong
4024.60
now 19
6
Winshigher is better
Blas Castaño
.0001.48
now 0
00
Shawn Armstrong
.0001.48
now 1
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
Hold · wait & seeShawn Armstrong — hold.conf 0.50
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