MLB Daily DeltaWeek 15 · July 2, 2026
Brandon Williamson
CIN · P
Change to
Portrait of Martín Pérez
Martín Pérez
ATL · P
Change to
Who's more valuable, rest of season

Martín Pérez.

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

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

Martín Pérez wins 2 categories (K, ERA); Brandon Williamson wins 1 (WHIP); 1 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Brandon Williamson
92.5
Martín Pérez
90.0
Swinging-Strike %lg 11.0% · higher = better
Brandon Williamson
10.4%
Martín Pérez
9.5%
Strikeout %lg 22.0% · higher = better
Brandon Williamson
14.8%
Martín Pérez
19.5%
Chase %lg 28.5% · higher = better
Brandon Williamson
24.6%
Martín Pérez
26.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Brandon Williamson
41.9%
Martín Pérez
36.8%
Barrel % Allowedlg 8.0% · lower = better
Brandon Williamson
10.5%
Martín Pérez
6.8%
xwOBA Allowedlg .315 · lower = better
Brandon Williamson
.389
Martín Pérez
.323
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
Brandon Williamson
27.44
lg xERA 4.10
now 6.11
4.29
Martín Pérez
27.44
lg xERA 4.10
now 2.79
4.26
WHIPlower is better
Brandon Williamson
.9001.87
now 1.64
1.34
Martín Pérez
.9001.87
now 1.06
1.36

Volume · rest of season
Strikeoutshigher is better
Brandon Williamson
4063.80
now 19
47
Martín Pérez
4063.80
now 42
51
Winshigher is better
Brandon Williamson
.4007.60
now 2
36
Martín Pérez
.4007.60
now 3
35

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

If you already own them — trade angle
Sell HighBrandon Williamson — sell high. His value is peaking; good time to trade him.conf 0.78
Sell HighMartín Pérez — sell high. His value is peaking; good time to trade him.conf 0.95
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