MLB Daily DeltaWeek 15 · July 3, 2026
Portrait of Grant Wolfram
Grant Wolfram
BAL · 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, 3 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

Grant Wolfram wins 1 (K); Michael Petersen wins 1 (SV); 3 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Grant Wolfram
94.9
Michael Petersen
97.6
Swinging-Strike %lg 11.0% · higher = better
Grant Wolfram
13.8%
Michael Petersen
14.4%
Strikeout %lg 22.0% · higher = better
Grant Wolfram
26.4%
Michael Petersen
30.1%
Chase %lg 28.5% · higher = better
Grant Wolfram
33.7%
Michael Petersen
31.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Grant Wolfram
40.5%
Michael Petersen
47.1%
Barrel % Allowedlg 8.0% · lower = better
Grant Wolfram
5.4%
Michael Petersen
12.6%
xwOBA Allowedlg .315 · lower = better
Grant Wolfram
.285
Michael Petersen
.294
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
Grant Wolfram
3.414.24
lg xERA 4.10
now 4.02
3.70
Michael Petersen
3.414.24
lg xERA 4.10
now 3.63
3.70
WHIPlower is better
Grant Wolfram
.9601.69
now 1.53
1.24
Michael Petersen
.9601.69
now 1.12
1.24

Volume · rest of season
Strikeoutshigher is better
Grant Wolfram
4035.60
now 21
30
Michael Petersen
4035.60
now 23
23
Winshigher is better
Grant Wolfram
.5202.48
now 1
12
Michael Petersen
.5202.48
now 1
12
Saveshigher is better
Grant Wolfram
.0003.40
now 0
0
Michael Petersen
.0003.40
now 1
02
If you already own them — trade angle
Buy LowGrant Wolfram — buy low. The dip is a window to acquire.conf 0.79
Hold · wait & seeMichael Petersen — hold.conf 0.50
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