MLB Daily DeltaWeek 27 · September 29, 2026
Brock Stewart
LAD · P
Change to
Portrait of Michael Petersen
Michael Petersen
MIA · 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

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Brock Stewart
95.9
Michael Petersen
98.0
Swinging-Strike %lg 11.0% · higher = better
Brock Stewart
13.9%
Michael Petersen
15.3%
Strikeout %lg 22.0% · higher = better
Brock Stewart
24.3%
Michael Petersen
30.1%
Chase %lg 28.5% · higher = better
Brock Stewart
34.8%
Michael Petersen
33.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Brock Stewart
27.9%
Michael Petersen
43.2%
Barrel % Allowedlg 8.0% · lower = better
Brock Stewart
4.4%
Michael Petersen
12.3%
xwOBA Allowedlg .315 · lower = better
Brock Stewart
.248
Michael Petersen
.287
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
Brock Stewart
25.18
lg xERA 4.10
now 0.00
3.70
Michael Petersen
25.18
lg xERA 4.10
now 3.63
3.45
WHIPlower is better
Brock Stewart
.9001.59
now 0.50
1.24
Michael Petersen
.9001.59
now 1.12
1.28

Volume · rest of season
Strikeoutshigher is better
Brock Stewart
4032.20
now 3
0
Michael Petersen
4032.20
now 23
0
Winshigher is better
Brock Stewart
.0001.48
now 0
0–0
Michael Petersen
.0001.48
now 1
0–0

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

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