MLB Daily DeltaWeek 19 · July 31, 2026
Portrait of Grayson Rodriguez
Grayson Rodriguez
LAA · P
Change to
Portrait of Merrill Kelly
Merrill Kelly
AZ · 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

Grayson Rodriguez wins 2 (K, W); Merrill Kelly wins 2 (ERA, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Grayson Rodriguez
96.1
Merrill Kelly
92.2
Swinging-Strike %lg 11.0% · higher = better
Grayson Rodriguez
10.7%
Merrill Kelly
10.3%
Strikeout %lg 22.0% · higher = better
Grayson Rodriguez
17.3%
Merrill Kelly
15.0%
Chase %lg 28.5% · higher = better
Grayson Rodriguez
25.5%
Merrill Kelly
34.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Grayson Rodriguez
52.4%
Merrill Kelly
45.2%
Barrel % Allowedlg 8.0% · lower = better
Grayson Rodriguez
11.6%
Merrill Kelly
13.5%
xwOBA Allowedlg .315 · lower = better
Grayson Rodriguez
.414
Merrill Kelly
.397
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
Grayson Rodriguez
4.078.25
lg xERA 4.10
now 7.53
6.60
Merrill Kelly
4.078.25
lg xERA 4.10
now 5.06
6.08
WHIPlower is better
Grayson Rodriguez
1.321.77
now 1.67
1.47
Merrill Kelly
1.321.77
now 1.46
1.42

Volume · rest of season
Strikeoutshigher is better
Grayson Rodriguez
4056
now 14
44
Merrill Kelly
4056
now 33
32
Winshigher is better
Grayson Rodriguez
.0009
now 2
37
Merrill Kelly
.0009
now 5
36

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

If you already own them — trade angle
SellGrayson Rodriguez — sell.conf 0.90
SellMerrill Kelly — sell.conf 0.90
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