MLB Daily DeltaWeek 17 · July 19, 2026
Portrait of Stephen Kolek
Stephen Kolek
KC · P
Change to
Portrait of Trey Yesavage
Trey Yesavage
TOR · 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

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Stephen Kolek
94.2
Trey Yesavage
94.4
Swinging-Strike %lg 11.0% · higher = better
Stephen Kolek
9.6%
Trey Yesavage
13.8%
Strikeout %lg 22.0% · higher = better
Stephen Kolek
15.2%
Trey Yesavage
22.2%
Chase %lg 28.5% · higher = better
Stephen Kolek
26.7%
Trey Yesavage
28.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Stephen Kolek
36.9%
Trey Yesavage
35.3%
Barrel % Allowedlg 8.0% · lower = better
Stephen Kolek
6.8%
Trey Yesavage
5.5%
xwOBA Allowedlg .315 · lower = better
Stephen Kolek
.303
Trey Yesavage
.284
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
Stephen Kolek
24.43
lg xERA 4.10
now 3.48
3.79
Trey Yesavage
24.43
lg xERA 4.10
now 2.19
3.31
WHIPlower is better
Stephen Kolek
.9001.58
now 0.94
1.32
Trey Yesavage
.9001.58
now 1.16
1.40

Volume · rest of season
Strikeoutshigher is better
Stephen Kolek
4072.20
now 19
34
Trey Yesavage
4072.20
now 39
57
Winshigher is better
Stephen Kolek
.0009
now 3
37
Trey Yesavage
.0009
now 2
24

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

If you already own them — trade angle
BuyStephen Kolek — buy.conf 0.69
BuyTrey Yesavage — buy.conf 0.84
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