MLB Daily DeltaWeek 27 · September 27, 2026
Portrait of Michael Petersen
Michael Petersen
MIA · P
Change to
Portrait of Peyton Gray
Peyton Gray
TEX · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 1–1, 2 even. Take whoever fills a bigger need.

Head-to-head
K
◀
ERA
WHIP
▶
W
SV n/a

Michael Petersen wins 1 (ERA); Peyton Gray wins 1 (WHIP); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Michael Petersen
98.0
Peyton Gray
93.1
Swinging-Strike %lg 11.0% · higher = better
Michael Petersen
15.4%
Peyton Gray
12.7%
Strikeout %lg 22.0% · higher = better
Michael Petersen
30.7%
Peyton Gray
24.1%
Chase %lg 28.5% · higher = better
Michael Petersen
33.9%
Peyton Gray
33.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Michael Petersen
42.4%
Peyton Gray
34.5%
Barrel % Allowedlg 8.0% · lower = better
Michael Petersen
11.9%
Peyton Gray
7.1%
xwOBA Allowedlg .315 · lower = better
Michael Petersen
.284
Peyton Gray
.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
Michael Petersen
3.153.85
lg xERA 4.10
now 3.63
3.37
Peyton Gray
3.153.85
lg xERA 4.10
now 3.57
3.57
WHIPlower is better
Michael Petersen
1.051.37
now 1.12
1.27
Peyton Gray
1.051.37
now 1.30
1.25

Volume · rest of season
Strikeoutshigher is better
Michael Petersen
4032.20
now 23
0
Peyton Gray
4032.20
now 18
0
Winshigher is better
Michael Petersen
.0001.48
now 1
0–0
Peyton Gray
.0001.48
now 1
0–0

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

If you already own them — trade angle
BuyMichael Petersen — buy.conf 0.82
BuyPeyton Gray — buy.conf 0.76
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