MLB Daily DeltaWeek 13 · June 22, 2026
Portrait of Roki Sasaki
Roki Sasaki
LAD · 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); Roki Sasaki wins 1 (K); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Roki Sasaki
97.5
Stephen Kolek
94.2
Swinging-Strike %lg 11.0% · higher = better
Roki Sasaki
14.7%
Stephen Kolek
10.2%
Strikeout %lg 22.0% · higher = better
Roki Sasaki
24.1%
Stephen Kolek
17.2%
Chase %lg 28.5% · higher = better
Roki Sasaki
32.2%
Stephen Kolek
26.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Roki Sasaki
44.8%
Stephen Kolek
38.6%
Barrel % Allowedlg 8.0% · lower = better
Roki Sasaki
10.4%
Stephen Kolek
6.5%
xwOBA Allowedlg .315 · lower = better
Roki Sasaki
.323
Stephen Kolek
.291
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
Roki Sasaki
3.045.03
lg xERA 4.10
now 4.59
4.24
Stephen Kolek
3.045.03
lg xERA 4.10
now 3.48
4.04
WHIPlower is better
Roki Sasaki
.9001.51
now 1.35
1.31
Stephen Kolek
.9001.51
now 0.94
1.30

Volume · rest of season
Strikeoutshigher is better
Roki Sasaki
4093.20
now 50
72
Stephen Kolek
4093.20
now 19
46
Winshigher is better
Roki Sasaki
.20012.80
now 3
36
Stephen Kolek
.20012.80
now 3
510

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

If you already own them — trade angle
Hold · leans sellRoki Sasaki — hold.conf 0.60
Sell HighStephen Kolek — sell high. His value is peaking; good time to trade him.conf 0.86
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