MLB Daily DeltaWeek 17 · July 21, 2026
Portrait of Jacob Lopez
Jacob Lopez
ATH · P
Change to
Jake Irvin
WSH · 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); Jake Irvin 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
Jake Irvin
92.9
Swinging-Strike %lg 11.0% · higher = better
Jacob Lopez
9.3%
Jake Irvin
11.8%
Strikeout %lg 22.0% · higher = better
Jacob Lopez
17.4%
Jake Irvin
25.4%
Chase %lg 28.5% · higher = better
Jacob Lopez
25.4%
Jake Irvin
25.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Jacob Lopez
31.4%
Jake Irvin
45.8%
Barrel % Allowedlg 8.0% · lower = better
Jacob Lopez
4.6%
Jake Irvin
12.0%
xwOBA Allowedlg .315 · lower = better
Jacob Lopez
.305
Jake Irvin
.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
2.737.90
lg xERA 4.10
now 6.75
3.88
Jake Irvin
2.737.90
lg xERA 4.10
now 5.23
4.84
WHIPlower is better
Jacob Lopez
1.132.04
now 1.84
1.54
Jake Irvin
1.132.04
now 1.35
1.33

Volume · rest of season
Strikeoutshigher is better
Jacob Lopez
4066
now 38
42
Jake Irvin
4066
now 58
51
Winshigher is better
Jacob Lopez
.0008
now 4
36
Jake Irvin
.0008
now 2
13

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

If you already own them — trade angle
Hold · leans buyJacob Lopez — hold.conf 0.60
SellJake Irvin — sell.conf 0.89
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