MLB Daily DeltaWeek 27 · September 30, 2026
Portrait of Blas Castaño
Blas Castaño
COL · P
Change to
Portrait of Kirby Yates
Kirby Yates
PIT · 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); Kirby Yates 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
Kirby Yates
90.8
Swinging-Strike %lg 11.0% · higher = better
Blas Castaño
8.7%
Kirby Yates
14.6%
Strikeout %lg 22.0% · higher = better
Blas Castaño
18.9%
Kirby Yates
27.5%
Chase %lg 28.5% · higher = better
Blas Castaño
28.7%
Kirby Yates
35.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Blas Castaño
48.1%
Kirby Yates
47.2%
Barrel % Allowedlg 8.0% · lower = better
Blas Castaño
8.9%
Kirby Yates
5.6%
xwOBA Allowedlg .315 · lower = better
Blas Castaño
.367
Kirby Yates
.285
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
3.225.39
lg xERA 4.10
now 4.91
3.70
Kirby Yates
3.225.39
lg xERA 4.10
now 4.32
3.70
WHIPlower is better
Blas Castaño
1.101.55
now 1.45
1.24
Kirby Yates
1.101.55
now 1.20
1.24

Volume · rest of season
Strikeoutshigher is better
Blas Castaño
4015.60
now 10
0
Kirby Yates
4015.60
now 10
0
Winshigher is better
Blas Castaño
.000.480
now 0
0–0
Kirby Yates
.000.480
now 0
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 & seeKirby Yates — hold.conf 0.50
Tweet