MLB Daily DeltaWeek 28 · October 5, 2026
Portrait of Michael Petersen
Michael Petersen
MIA · P
Change to
Portrait of Shawn Armstrong
Shawn Armstrong
CLE · 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); Shawn Armstrong 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
Shawn Armstrong
93.5
Swinging-Strike %lg 11.0% · higher = better
Michael Petersen
15.3%
Shawn Armstrong
11.6%
Strikeout %lg 22.0% · higher = better
Michael Petersen
30.1%
Shawn Armstrong
22.1%
Chase %lg 28.5% · higher = better
Michael Petersen
33.8%
Shawn Armstrong
24.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Michael Petersen
43.2%
Shawn Armstrong
35.4%
Barrel % Allowedlg 8.0% · lower = better
Michael Petersen
12.3%
Shawn Armstrong
7.1%
xwOBA Allowedlg .315 · lower = better
Michael Petersen
.287
Shawn Armstrong
.315
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
3.233.92
lg xERA 4.10
now 3.63
3.45
Shawn Armstrong
3.233.92
lg xERA 4.10
now 3.60
3.70
WHIPlower is better
Michael Petersen
1.041.41
now 1.12
1.28
Shawn Armstrong
1.041.41
now 1.33
1.24

Volume · rest of season
Strikeoutshigher is better
Michael Petersen
4032.20
now 23
0
Shawn Armstrong
4032.20
now 19
0
Winshigher is better
Michael Petersen
.0001.48
now 1
0–0
Shawn Armstrong
.0001.48
now 1
0–0

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

If you already own them — trade angle
Sell HighMichael Petersen — sell high. His value is peaking; good time to trade him.conf 0.82
Hold · wait & seeShawn Armstrong — hold.conf 0.50
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