MLB Daily DeltaWeek 18 · July 29, 2026
Portrait of Grant Holmes
Grant Holmes
ATL · 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 — WHIP and wins.

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

Martín Pérez wins 2 categories (WHIP, W); Grant Holmes wins 1 (K); 1 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Grant Holmes
94.2
Martín Pérez
89.9
Swinging-Strike %lg 11.0% · higher = better
Grant Holmes
12.8%
Martín Pérez
9.1%
Strikeout %lg 22.0% · higher = better
Grant Holmes
19.7%
Martín Pérez
18.5%
Chase %lg 28.5% · higher = better
Grant Holmes
31.3%
Martín Pérez
25.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Grant Holmes
43.0%
Martín Pérez
38.1%
Barrel % Allowedlg 8.0% · lower = better
Grant Holmes
8.9%
Martín Pérez
6.4%
xwOBA Allowedlg .315 · lower = better
Grant Holmes
.333
Martín Pérez
.332
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 Holmes
2.105.20
lg xERA 4.10
now 3.95
4.51
Martín Pérez
2.105.20
lg xERA 4.10
now 2.79
4.49
WHIPlower is better
Grant Holmes
.9301.52
now 1.33
1.39
Martín Pérez
.9301.52
now 1.06
1.38

Volume · rest of season
Strikeoutshigher is better
Grant Holmes
4060.60
now 53
46
Martín Pérez
4060.60
now 42
34
Winshigher is better
Grant Holmes
1.204.80
now 3
23
Martín Pérez
1.204.80
now 3
24

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

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