MLB Daily DeltaWeek 25 · September 10, 2026
Ethan Pecko
HOU · P
Change to
Portrait of Jack Flaherty
Jack Flaherty
DET · P
Change to
Who's more valuable, rest of season

Ethan Pecko.

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

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

Ethan Pecko wins 2 categories (ERA, WHIP); Jack Flaherty 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
Ethan Pecko
93.5
Jack Flaherty
92.7
Swinging-Strike %lg 11.0% · higher = better
Ethan Pecko
10.2%
Jack Flaherty
12.2%
Strikeout %lg 22.0% · higher = better
Ethan Pecko
14.3%
Jack Flaherty
26.2%
Chase %lg 28.5% · higher = better
Ethan Pecko
28.2%
Jack Flaherty
27.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Ethan Pecko
43.6%
Jack Flaherty
46.2%
Barrel % Allowedlg 8.0% · lower = better
Ethan Pecko
10.9%
Jack Flaherty
8.4%
xwOBA Allowedlg .315 · lower = better
Ethan Pecko
.384
Jack Flaherty
.323
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
Ethan Pecko
3.426.49
lg xERA 4.10
now 4.91
4.10
Jack Flaherty
3.426.49
lg xERA 4.10
now 5.81
4.30
WHIPlower is better
Ethan Pecko
1.161.78
now 1.64
1.30
Jack Flaherty
1.161.78
now 1.61
1.36

Volume · rest of season
Strikeoutshigher is better
Ethan Pecko
4088
now 4
11
Jack Flaherty
4088
now 64
15
Winshigher is better
Ethan Pecko
.000.480
now 0
00
Jack Flaherty
.000.480
now 0
00

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

If you already own them — trade angle
Sell HighEthan Pecko — sell high. His value is peaking; good time to trade him.conf 0.95
SellJack Flaherty — sell.conf 0.64
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