MLB Daily DeltaWeek 20 · August 7, 2026
Portrait of Blas Castaño
Blas Castaño
COL · P
Change to
Portrait of Griffin Jax
Griffin Jax
TB · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22. Take whoever fills a bigger need.

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

Blas Castaño wins 2 (ERA, WHIP); Griffin Jax wins 2 (K, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Blas Castaño
94.5
Griffin Jax
96.0
Swinging-Strike %lg 11.0% · higher = better
Blas Castaño
9.0%
Griffin Jax
15.2%
Strikeout %lg 22.0% · higher = better
Blas Castaño
20.0%
Griffin Jax
26.4%
Chase %lg 28.5% · higher = better
Blas Castaño
28.1%
Griffin Jax
35.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Blas Castaño
50.0%
Griffin Jax
39.7%
Barrel % Allowedlg 8.0% · lower = better
Blas Castaño
10.0%
Griffin Jax
9.3%
xwOBA Allowedlg .315 · lower = better
Blas Castaño
.367
Griffin Jax
.323
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
Griffin Jax
3.225.39
lg xERA 4.10
now 4.76
4.15
WHIPlower is better
Blas Castaño
1.151.56
now 1.45
1.24
Griffin Jax
1.151.56
now 1.47
1.25

Volume · rest of season
Strikeoutshigher is better
Blas Castaño
4040.80
now 10
18
Griffin Jax
4040.80
now 32
19
Winshigher is better
Blas Castaño
.0001.48
now 0
00
Griffin Jax
.0001.48
now 1
01

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 · leans sellGriffin Jax — hold.conf 0.60
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