MLB Daily DeltaWeek 19 · July 31, 2026
Portrait of Jacob Lopez
Jacob Lopez
ATH · P
Change to
Portrait of Ryne Nelson
Ryne Nelson
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

Jacob Lopez wins 2 (ERA, W); Ryne Nelson wins 2 (K, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jacob Lopez
90.5
Ryne Nelson
96.3
Swinging-Strike %lg 11.0% · higher = better
Jacob Lopez
10.4%
Ryne Nelson
11.4%
Strikeout %lg 22.0% · higher = better
Jacob Lopez
18.7%
Ryne Nelson
17.5%
Chase %lg 28.5% · higher = better
Jacob Lopez
26.0%
Ryne Nelson
34.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Jacob Lopez
30.9%
Ryne Nelson
43.4%
Barrel % Allowedlg 8.0% · lower = better
Jacob Lopez
4.5%
Ryne Nelson
10.2%
xwOBA Allowedlg .315 · lower = better
Jacob Lopez
.299
Ryne Nelson
.349
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
Jacob Lopez
2.527.96
lg xERA 4.10
now 6.75
3.73
Ryne Nelson
2.527.96
lg xERA 4.10
now 4.82
4.85
WHIPlower is better
Jacob Lopez
.9302.10
now 1.84
1.52
Ryne Nelson
.9302.10
now 1.19
1.28

Volume · rest of season
Strikeoutshigher is better
Jacob Lopez
4059.20
now 38
34
Ryne Nelson
4059.20
now 52
38
Winshigher is better
Jacob Lopez
.0006.60
now 4
25
Ryne Nelson
.0006.60
now 2
12

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

If you already own them — trade angle
BuyJacob Lopez — buy.conf 0.71
SellRyne Nelson — sell.conf 0.90
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