MLB Daily DeltaWeek 27 · September 30, 2026
Chase Petty
CIN · P
Change to
Matt Waldron
WSH · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 0–0, 4 even. Take whoever fills a bigger need.

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

Chase Petty 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
Chase Petty
96.9
Matt Waldron
92.0
Swinging-Strike %lg 11.0% · higher = better
Chase Petty
9.4%
Matt Waldron
8.8%
Strikeout %lg 22.0% · higher = better
Chase Petty
10.8%
Matt Waldron
17.0%
Chase %lg 28.5% · higher = better
Chase Petty
27.9%
Matt Waldron
31.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Chase Petty
37.5%
Matt Waldron
36.5%
Barrel % Allowedlg 8.0% · lower = better
Chase Petty
8.9%
Matt Waldron
5.4%
xwOBA Allowedlg .315 · lower = better
Chase Petty
.361
Matt Waldron
.291
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
Chase Petty
2.328.25
lg xERA 4.10
now 6.35
4.10
Matt Waldron
2.328.25
lg xERA 4.10
now 8.49
4.08
WHIPlower is better
Chase Petty
1.051.90
now 1.24
1.30
Matt Waldron
1.051.90
now 1.71
1.30

Volume · rest of season
Strikeoutshigher is better
Chase Petty
4030.80
now 2
0
Matt Waldron
4030.80
now 22
0
Winshigher is better
Chase Petty
.0001.48
now 0
0–0
Matt Waldron
.0001.48
now 1
0–0

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

If you already own them — trade angle
Sell HighChase Petty — sell high. His value is peaking; good time to trade him.conf 0.91
Buy LowMatt Waldron — buy low. The dip is a window to acquire.conf 0.90
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