MLB Daily DeltaWeek 20 · August 8, 2026
Portrait of David Peterson
David Peterson
CHC · P
Change to
Portrait of Trevor Rogers
Trevor Rogers
BAL · 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

David Peterson wins 2 (K, W); Trevor Rogers wins 2 (ERA, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
David Peterson
92.3
Trevor Rogers
93.6
Swinging-Strike %lg 11.0% · higher = better
David Peterson
9.7%
Trevor Rogers
12.4%
Strikeout %lg 22.0% · higher = better
David Peterson
18.5%
Trevor Rogers
20.2%
Chase %lg 28.5% · higher = better
David Peterson
28.8%
Trevor Rogers
34.5%
Hard-Hit % Allowedlg 40.0% · lower = better
David Peterson
41.5%
Trevor Rogers
38.8%
Barrel % Allowedlg 8.0% · lower = better
David Peterson
6.7%
Trevor Rogers
6.5%
xwOBA Allowedlg .315 · lower = better
David Peterson
.341
Trevor Rogers
.300
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
David Peterson
2.508.08
lg xERA 4.10
now 5.18
4.66
Trevor Rogers
2.508.08
lg xERA 4.10
now 6.84
3.74
WHIPlower is better
David Peterson
1.181.71
now 1.59
1.43
Trevor Rogers
1.181.71
now 1.56
1.30

Volume · rest of season
Strikeoutshigher is better
David Peterson
4066.80
now 56
38
Trevor Rogers
4066.80
now 38
29
Winshigher is better
David Peterson
.2003.80
now 3
13
Trevor Rogers
.2003.80
now 2
12

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

If you already own them — trade angle
SellDavid Peterson — sell.conf 0.81
BuyTrevor Rogers — buy.conf 0.71
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