MLB Daily DeltaWeek 19 · July 31, 2026
Chris Roycroft
TB · 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

Chris Roycroft 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
Chris Roycroft
94.2
Griffin Jax
96.1
Swinging-Strike %lg 11.0% · higher = better
Chris Roycroft
7.8%
Griffin Jax
15.1%
Strikeout %lg 22.0% · higher = better
Chris Roycroft
16.1%
Griffin Jax
25.7%
Chase %lg 28.5% · higher = better
Chris Roycroft
27.1%
Griffin Jax
34.9%
Hard-Hit % Allowedlg 40.0% · lower = better
Chris Roycroft
43.9%
Griffin Jax
39.7%
Barrel % Allowedlg 8.0% · lower = better
Chris Roycroft
12.1%
Griffin Jax
9.8%
xwOBA Allowedlg .315 · lower = better
Chris Roycroft
.377
Griffin Jax
.333
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
Chris Roycroft
28.25
lg xERA 4.10
now 12.27
3.70
Griffin Jax
28.25
lg xERA 4.10
now 4.76
4.36
WHIPlower is better
Chris Roycroft
.9002.55
now 3.55
1.24
Griffin Jax
.9002.55
now 1.47
1.27

Volume · rest of season
Strikeoutshigher is better
Chris Roycroft
4043.60
now 3
11
Griffin Jax
4043.60
now 32
22
Winshigher is better
Chris Roycroft
.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 & seeChris Roycroft — hold.conf 0.55
SellGriffin Jax — sell.conf 0.74
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