MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Jacob Lopez
Jacob Lopez
ATH · P
Change to
Portrait of Stephen Kolek
Stephen Kolek
KC · P
Change to
Who's more valuable, rest of season

Jacob Lopez.

He projects to help you in more roto categories the rest of the way — strikeouts and ERA.

Head-to-head
K
ERA
WHIP
W
SV n/a

Jacob Lopez wins 2 categories (K, ERA); Stephen Kolek wins 1 (WHIP); 1 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jacob Lopez
90.4
Stephen Kolek
94.2
Swinging-Strike %lg 11.0% · higher = better
Jacob Lopez
11.3%
Stephen Kolek
9.6%
Strikeout %lg 22.0% · higher = better
Jacob Lopez
21.1%
Stephen Kolek
15.2%
Chase %lg 28.5% · higher = better
Jacob Lopez
28.2%
Stephen Kolek
26.7%
Hard-Hit % Allowedlg 40.0% · lower = better
Jacob Lopez
30.2%
Stephen Kolek
36.9%
Barrel % Allowedlg 8.0% · lower = better
Jacob Lopez
6.3%
Stephen Kolek
6.8%
xwOBA Allowedlg .315 · lower = better
Jacob Lopez
.290
Stephen Kolek
.303
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
2.178.06
lg xERA 4.10
now 6.75
3.49
Stephen Kolek
2.178.06
lg xERA 4.10
now 3.48
3.84
WHIPlower is better
Jacob Lopez
.9002.20
now 1.84
1.41
Stephen Kolek
.9002.20
now 0.94
1.32

Volume · rest of season
Strikeoutshigher is better
Jacob Lopez
4050
now 38
9
Stephen Kolek
4050
now 19
8
Winshigher is better
Jacob Lopez
.0005.20
now 4
11
Stephen Kolek
.0005.20
now 3
12

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

If you already own them — trade angle
BuyJacob Lopez — buy.conf 0.78
Hold · leans buyStephen Kolek — hold.conf 0.60
Tweet