MLB Daily DeltaWeek 13 · June 24, 2026
Portrait of Foster Griffin
Foster Griffin
WSH · P
Change to
Portrait of Will Warren
Will Warren
NYY · P
Change to
Who's more valuable, rest of season

Will Warren.

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

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

Will Warren wins 3 categories (K, ERA, W); Foster Griffin wins 1 (WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Foster Griffin
91.4
Will Warren
93.7
Swinging-Strike %lg 11.0% · higher = better
Foster Griffin
11.8%
Will Warren
9.9%
Strikeout %lg 22.0% · higher = better
Foster Griffin
23.8%
Will Warren
24.7%
Chase %lg 28.5% · higher = better
Foster Griffin
31.9%
Will Warren
28.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Foster Griffin
38.4%
Will Warren
37.9%
Barrel % Allowedlg 8.0% · lower = better
Foster Griffin
11.0%
Will Warren
6.6%
xwOBA Allowedlg .315 · lower = better
Foster Griffin
.314
Will Warren
.302
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
Foster Griffin
2.894.38
lg xERA 4.10
now 3.76
4.05
Will Warren
2.894.38
lg xERA 4.10
now 3.22
3.72
WHIPlower is better
Foster Griffin
1.081.37
now 1.15
1.16
Will Warren
1.081.37
now 1.20
1.30

Volume · rest of season
Strikeoutshigher is better
Foster Griffin
55.4098.60
now 65
79
Will Warren
55.4098.60
now 70
89
Winshigher is better
Foster Griffin
2.2014.80
now 6
510
Will Warren
2.2014.80
now 7
612

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

If you already own them — trade angle
Sell HighFoster Griffin — sell high. His value is peaking; good time to trade him.conf 0.95
BuyWill Warren — buy.conf 0.71
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