MLB Daily DeltaWeek 27 · September 29, 2026
Portrait of Michael Petersen
Michael Petersen
MIA · P
Change to
Portrait of Robert Suarez
Robert Suarez
ATL · 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); Robert Suarez 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
Robert Suarez
98.7
Swinging-Strike %lg 11.0% · higher = better
Michael Petersen
15.3%
Robert Suarez
12.5%
Strikeout %lg 22.0% · higher = better
Michael Petersen
30.1%
Robert Suarez
20.0%
Chase %lg 28.5% · higher = better
Michael Petersen
33.8%
Robert Suarez
38.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Michael Petersen
43.2%
Robert Suarez
33.0%
Barrel % Allowedlg 8.0% · lower = better
Michael Petersen
12.3%
Robert Suarez
3.1%
xwOBA Allowedlg .315 · lower = better
Michael Petersen
.287
Robert Suarez
.283
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
24.87
lg xERA 4.10
now 3.63
3.45
Robert Suarez
24.87
lg xERA 4.10
now 0.71
3.68
WHIPlower is better
Michael Petersen
.9001.46
now 1.12
1.28
Robert Suarez
.9001.46
now 0.83
1.24

Volume · rest of season
Strikeoutshigher is better
Michael Petersen
4032.20
now 23
0
Robert Suarez
4032.20
now 22
0
Winshigher is better
Michael Petersen
.0005.60
now 1
0–0
Robert Suarez
.0005.60
now 4
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
Sell HighRobert Suarez — sell high. His value is peaking; good time to trade him.conf 0.95
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