MLB Daily DeltaWeek 19 · August 1, 2026
Portrait of Jack Flaherty
Jack Flaherty
DET · P
Change to
Portrait of Jacob Lopez
Jacob Lopez
ATH · 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

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jack Flaherty
92.7
Jacob Lopez
90.5
Swinging-Strike %lg 11.0% · higher = better
Jack Flaherty
12.2%
Jacob Lopez
10.4%
Strikeout %lg 22.0% · higher = better
Jack Flaherty
26.2%
Jacob Lopez
18.7%
Chase %lg 28.5% · higher = better
Jack Flaherty
27.6%
Jacob Lopez
26.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Jack Flaherty
46.2%
Jacob Lopez
30.9%
Barrel % Allowedlg 8.0% · lower = better
Jack Flaherty
8.4%
Jacob Lopez
4.5%
xwOBA Allowedlg .315 · lower = better
Jack Flaherty
.323
Jacob Lopez
.299
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
Jack Flaherty
2.517.96
lg xERA 4.10
now 5.81
4.29
Jacob Lopez
2.517.96
lg xERA 4.10
now 6.75
3.72
WHIPlower is better
Jack Flaherty
1.172.03
now 1.61
1.36
Jacob Lopez
1.172.03
now 1.84
1.52

Volume · rest of season
Strikeoutshigher is better
Jack Flaherty
4076.40
now 64
51
Jacob Lopez
4076.40
now 38
33
Winshigher is better
Jack Flaherty
.0007
now 0
00
Jacob Lopez
.0007
now 4
25

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

If you already own them — trade angle
SellJack Flaherty — sell.conf 0.64
BuyJacob Lopez — buy.conf 0.71
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