MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Keaton Winn
Keaton Winn
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 11, 2 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV n/a

Keaton Winn 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
Keaton Winn
96.1
Michael Petersen
97.9
Swinging-Strike %lg 11.0% · higher = better
Keaton Winn
10.9%
Michael Petersen
14.8%
Strikeout %lg 22.0% · higher = better
Keaton Winn
18.8%
Michael Petersen
28.6%
Chase %lg 28.5% · higher = better
Keaton Winn
27.7%
Michael Petersen
33.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Keaton Winn
33.3%
Michael Petersen
41.3%
Barrel % Allowedlg 8.0% · lower = better
Keaton Winn
4.9%
Michael Petersen
10.1%
xwOBA Allowedlg .315 · lower = better
Keaton Winn
.308
Michael Petersen
.286
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
Keaton Winn
24.21
lg xERA 4.10
now 2.45
3.71
Michael Petersen
24.21
lg xERA 4.10
now 3.63
3.39
WHIPlower is better
Keaton Winn
.9001.46
now 0.90
1.25
Michael Petersen
.9001.46
now 1.12
1.30

Volume · rest of season
Strikeoutshigher is better
Keaton Winn
4030.60
now 22
4
Michael Petersen
4030.60
now 23
4
Winshigher is better
Keaton Winn
.0001.48
now 1
00
Michael Petersen
.0001.48
now 1
00

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

If you already own them — trade angle
Sell HighKeaton Winn — sell high. His value is peaking; good time to trade him.conf 0.80
BuyMichael Petersen — buy.conf 0.81
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