MLB Daily DeltaWeek 20 · August 8, 2026
Portrait of David Peterson
David Peterson
CHC · P
Change to
Jose Quintana
COL · P
Change to
Who's more valuable, rest of season

Jose Quintana.

He projects to help you in more roto categories the rest of the way — ERA and WHIP. David Peterson’s box score looks better right now, but the luck-stripped projection flips it.

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

Jose Quintana wins 2 categories (ERA, WHIP); David Peterson wins 1 (K); 1 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
David Peterson
92.3
Jose Quintana
89.7
Swinging-Strike %lg 11.0% · higher = better
David Peterson
9.7%
Jose Quintana
9.9%
Strikeout %lg 22.0% · higher = better
David Peterson
18.5%
Jose Quintana
11.0%
Chase %lg 28.5% · higher = better
David Peterson
28.8%
Jose Quintana
32.0%
Hard-Hit % Allowedlg 40.0% · lower = better
David Peterson
41.5%
Jose Quintana
32.9%
Barrel % Allowedlg 8.0% · lower = better
David Peterson
6.7%
Jose Quintana
8.4%
xwOBA Allowedlg .315 · lower = better
David Peterson
.341
Jose Quintana
.343
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
3.885.67
lg xERA 4.10
now 5.18
4.66
Jose Quintana
3.885.67
lg xERA 4.10
now 5.27
4.28
WHIPlower is better
David Peterson
1.271.68
now 1.59
1.43
Jose Quintana
1.271.68
now 1.51
1.36

Volume · rest of season
Strikeoutshigher is better
David Peterson
4070.40
now 56
38
Jose Quintana
4070.40
now 20
24
Winshigher is better
David Peterson
.2003.80
now 3
13
Jose Quintana
.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
Hold · wait & seeJose Quintana — hold.conf 0.50
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