MLB Daily DeltaWeek 27 · September 29, 2026
Carson Seymour
SF · 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

Carson Seymour 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
Carson Seymour
97.2
Michael Petersen
98.0
Swinging-Strike %lg 11.0% · higher = better
Carson Seymour
11.1%
Michael Petersen
15.3%
Strikeout %lg 22.0% · higher = better
Carson Seymour
16.4%
Michael Petersen
30.1%
Chase %lg 28.5% · higher = better
Carson Seymour
25.9%
Michael Petersen
33.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Carson Seymour
41.0%
Michael Petersen
43.2%
Barrel % Allowedlg 8.0% · lower = better
Carson Seymour
9.0%
Michael Petersen
12.3%
xwOBA Allowedlg .315 · lower = better
Carson Seymour
.374
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
Carson Seymour
28.25
lg xERA 4.10
now 9.00
3.70
Michael Petersen
28.25
lg xERA 4.10
now 3.63
3.45
WHIPlower is better
Carson Seymour
.9002.55
now 2.33
1.24
Michael Petersen
.9002.55
now 1.12
1.28

Volume · rest of season
Strikeoutshigher is better
Carson Seymour
4032.20
now 1
0
Michael Petersen
4032.20
now 23
0
Winshigher is better
Carson Seymour
.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
Sell HighCarson Seymour — sell high. His value is peaking; good time to trade him.conf 0.95
Sell HighMichael Petersen — sell high. His value is peaking; good time to trade him.conf 0.82
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