MLB Daily DeltaWeek 16 · July 11, 2026
Portrait of Michael Petersen
Michael Petersen
MIA · P
Change to
Portrait of Tim Mayza
Tim Mayza
PHI · P
Change to
Who's more valuable, rest of season

Tim Mayza.

He projects to help you in more roto categories the rest of the way — strikeouts, ERA, and WHIP.

Head-to-head
K
ERA
WHIP
W
SV

Tim Mayza wins 3 categories (K, ERA, WHIP); Michael Petersen wins 1 (SV); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Michael Petersen
97.7
Tim Mayza
95.0
Swinging-Strike %lg 11.0% · higher = better
Michael Petersen
13.9%
Tim Mayza
11.0%
Strikeout %lg 22.0% · higher = better
Michael Petersen
30.4%
Tim Mayza
25.5%
Chase %lg 28.5% · higher = better
Michael Petersen
32.3%
Tim Mayza
30.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Michael Petersen
46.2%
Tim Mayza
43.9%
Barrel % Allowedlg 8.0% · lower = better
Michael Petersen
11.8%
Tim Mayza
6.1%
xwOBA Allowedlg .315 · lower = better
Michael Petersen
.284
Tim Mayza
.276
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
3.403.91
lg xERA 4.10
now 3.63
3.69
Tim Mayza
3.403.91
lg xERA 4.10
now 3.62
3.66
WHIPlower is better
Michael Petersen
.9001.34
now 1.12
1.24
Tim Mayza
.9001.34
now 0.99
1.23

Volume · rest of season
Strikeoutshigher is better
Michael Petersen
4031.60
now 23
20
Tim Mayza
4031.60
now 26
23
Winshigher is better
Michael Petersen
.5202.48
now 1
12
Tim Mayza
.5202.48
now 1
11
Saveshigher is better
Michael Petersen
.0003.40
now 1
02
Tim Mayza
.0003.40
now 0
0
If you already own them — trade angle
Sell HighMichael Petersen — sell high. His value is peaking; good time to trade him.conf 0.71
Hold · wait & seeTim Mayza — hold.conf 0.50
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