MLB Daily DeltaWeek 20 · August 9, 2026
Ronel Blanco
HOU · P
Change to
Portrait of Stephen Kolek
Stephen Kolek
KC · 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

Ronel Blanco wins 2 (K, WHIP); Stephen Kolek wins 2 (ERA, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Ronel Blanco
93.5
Stephen Kolek
94.2
Swinging-Strike %lg 11.0% · higher = better
Ronel Blanco
13.0%
Stephen Kolek
9.6%
Strikeout %lg 22.0% · higher = better
Ronel Blanco
21.0%
Stephen Kolek
15.2%
Chase %lg 28.5% · higher = better
Ronel Blanco
30.7%
Stephen Kolek
26.7%
Hard-Hit % Allowedlg 40.0% · lower = better
Ronel Blanco
34.6%
Stephen Kolek
36.9%
Barrel % Allowedlg 8.0% · lower = better
Ronel Blanco
13.5%
Stephen Kolek
6.8%
xwOBA Allowedlg .315 · lower = better
Ronel Blanco
.358
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
Ronel Blanco
28.25
lg xERA 4.10
now 7.71
4.10
Stephen Kolek
28.25
lg xERA 4.10
now 3.48
3.82
WHIPlower is better
Ronel Blanco
.9001.47
now 1.07
1.30
Stephen Kolek
.9001.47
now 0.94
1.32

Volume · rest of season
Strikeoutshigher is better
Ronel Blanco
4073.80
now 8
55
Stephen Kolek
4073.80
now 19
23
Winshigher is better
Ronel Blanco
.0007
now 0
00
Stephen Kolek
.0007
now 3
25

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

If you already own them — trade angle
Hold · wait & seeRonel Blanco — hold.conf 0.50
Hold · leans buyStephen Kolek — hold.conf 0.60
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