MLB Daily DeltaWeek 13 · June 23, 2026
Portrait of Freddy Peralta
Freddy Peralta
NYM · P
Change to
Portrait of Stephen Kolek
Stephen Kolek
KC · P
Change to
Who's more valuable, rest of season

Stephen Kolek.

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

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

Stephen Kolek wins 3 categories (ERA, WHIP, W); Freddy Peralta wins 1 (K); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Freddy Peralta
93.9
Stephen Kolek
94.1
Swinging-Strike %lg 11.0% · higher = better
Freddy Peralta
12.5%
Stephen Kolek
9.7%
Strikeout %lg 22.0% · higher = better
Freddy Peralta
22.1%
Stephen Kolek
16.0%
Chase %lg 28.5% · higher = better
Freddy Peralta
29.8%
Stephen Kolek
26.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Freddy Peralta
39.6%
Stephen Kolek
38.6%
Barrel % Allowedlg 8.0% · lower = better
Freddy Peralta
5.5%
Stephen Kolek
7.2%
xwOBA Allowedlg .315 · lower = better
Freddy Peralta
.306
Stephen Kolek
.304
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
Freddy Peralta
3.264.06
lg xERA 4.10
now 3.55
3.84
Stephen Kolek
3.264.06
lg xERA 4.10
now 3.48
3.79
WHIPlower is better
Freddy Peralta
.9001.53
now 1.30
1.36
Stephen Kolek
.9001.53
now 0.94
1.30

Volume · rest of season
Strikeoutshigher is better
Freddy Peralta
40128.20
now 68
97
Stephen Kolek
40128.20
now 19
47
Winshigher is better
Freddy Peralta
.00013.20
now 3
25
Stephen Kolek
.00013.20
now 3
510

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

If you already own them — trade angle
Hold · leans buyFreddy Peralta — hold.conf 0.60
BuyStephen Kolek — buy.conf 0.69
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