MLB Daily DeltaWeek 25 · September 10, 2026
Ethan Pecko
HOU · P
Change to
Matt Waldron
WSH · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 00, 4 even. Take whoever fills a bigger need.

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

Ethan Pecko wins 0 (none); Matt Waldron wins 0 (none); 4 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
Matt Waldron
92.0
Swinging-Strike %lg 11.0% · higher = better
Ethan Pecko
10.2%
Matt Waldron
8.8%
Strikeout %lg 22.0% · higher = better
Ethan Pecko
14.3%
Matt Waldron
17.0%
Chase %lg 28.5% · higher = better
Ethan Pecko
28.2%
Matt Waldron
31.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Ethan Pecko
43.6%
Matt Waldron
36.5%
Barrel % Allowedlg 8.0% · lower = better
Ethan Pecko
10.9%
Matt Waldron
5.4%
xwOBA Allowedlg .315 · lower = better
Ethan Pecko
.384
Matt Waldron
.292
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
2.328.25
lg xERA 4.10
now 4.91
4.10
Matt Waldron
2.328.25
lg xERA 4.10
now 8.49
4.08
WHIPlower is better
Ethan Pecko
1.141.87
now 1.64
1.30
Matt Waldron
1.141.87
now 1.71
1.30

Volume · rest of season
Strikeoutshigher is better
Ethan Pecko
4029.20
now 4
11
Matt Waldron
4029.20
now 22
11
Winshigher is better
Ethan Pecko
.0001.48
now 0
00
Matt Waldron
.0001.48
now 1
01

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
Buy LowMatt Waldron — buy low. The dip is a window to acquire.conf 0.90
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