MLB Daily DeltaWeek 20 · August 6, 2026
Portrait of Griffin Jax
Griffin Jax
TB · P
Change to
Michael Rucker
SEA · 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

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Griffin Jax
96.0
Michael Rucker
96.0
Swinging-Strike %lg 11.0% · higher = better
Griffin Jax
15.2%
Michael Rucker
13.1%
Strikeout %lg 22.0% · higher = better
Griffin Jax
26.4%
Michael Rucker
27.5%
Chase %lg 28.5% · higher = better
Griffin Jax
35.1%
Michael Rucker
34.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Griffin Jax
39.7%
Michael Rucker
39.7%
Barrel % Allowedlg 8.0% · lower = better
Griffin Jax
9.3%
Michael Rucker
6.9%
xwOBA Allowedlg .315 · lower = better
Griffin Jax
.323
Michael Rucker
.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
Griffin Jax
3.285.18
lg xERA 4.10
now 4.76
4.16
Michael Rucker
3.285.18
lg xERA 4.10
now 4.50
3.70
WHIPlower is better
Griffin Jax
.9001.86
now 1.47
1.25
Michael Rucker
.9001.86
now 0.50
1.24

Volume · rest of season
Strikeoutshigher is better
Griffin Jax
4043.60
now 32
19
Michael Rucker
4043.60
now 3
16
Winshigher is better
Griffin Jax
.0001.48
now 1
01
Michael Rucker
.0001.48
now 0
00

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

If you already own them — trade angle
SellGriffin Jax — sell.conf 0.64
Buy LowMichael Rucker — buy low. The dip is a window to acquire.conf 0.78
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