MLB Daily DeltaWeek 20 · August 9, 2026
Portrait of Foster Griffin
Foster Griffin
CLE · P
Change to
Portrait of Michael Soroka
Michael Soroka
AZ · 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

Foster Griffin wins 2 (K, WHIP); Michael Soroka wins 2 (ERA, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Foster Griffin
91.5
Michael Soroka
93.7
Swinging-Strike %lg 11.0% · higher = better
Foster Griffin
11.8%
Michael Soroka
11.0%
Strikeout %lg 22.0% · higher = better
Foster Griffin
22.4%
Michael Soroka
23.7%
Chase %lg 28.5% · higher = better
Foster Griffin
32.8%
Michael Soroka
33.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Foster Griffin
37.6%
Michael Soroka
34.1%
Barrel % Allowedlg 8.0% · lower = better
Foster Griffin
9.1%
Michael Soroka
8.6%
xwOBA Allowedlg .315 · lower = better
Foster Griffin
.312
Michael Soroka
.309
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
2.924.40
lg xERA 4.10
now 3.76
4.07
Michael Soroka
2.924.40
lg xERA 4.10
now 3.25
3.98
WHIPlower is better
Foster Griffin
1.081.27
now 1.15
1.18
Michael Soroka
1.081.27
now 1.20
1.19

Volume · rest of season
Strikeoutshigher is better
Foster Griffin
4076.20
now 65
38
Michael Soroka
4076.20
now 60
37
Winshigher is better
Foster Griffin
.0009
now 6
25
Michael Soroka
.0009
now 7
36

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
Hold · steadyMichael Soroka — hold.conf 0.60
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