MLB Daily DeltaWeek 16 · July 11, 2026
Portrait of Martín Pérez
Martín Pérez
ATL · P
Change to
Portrait of Steven Matz
Steven Matz
TB · P
Change to
Who's more valuable, rest of season

Steven Matz.

He projects to help you in more roto categories the rest of the way — strikeouts and wins. Martín Pérez’s box score looks better right now, but it’s built on luck that won’t hold.

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

Steven Matz wins 2 categories (K, W); Martín Pérez wins 1 (ERA); 1 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Martín Pérez
90.0
Steven Matz
93.3
Swinging-Strike %lg 11.0% · higher = better
Martín Pérez
9.3%
Steven Matz
10.3%
Strikeout %lg 22.0% · higher = better
Martín Pérez
18.6%
Steven Matz
17.8%
Chase %lg 28.5% · higher = better
Martín Pérez
26.2%
Steven Matz
27.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Martín Pérez
36.3%
Steven Matz
36.1%
Barrel % Allowedlg 8.0% · lower = better
Martín Pérez
6.8%
Steven Matz
13.0%
xwOBA Allowedlg .315 · lower = better
Martín Pérez
.330
Steven Matz
.366
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
Martín Pérez
26.19
lg xERA 4.10
now 2.79
4.42
Steven Matz
26.19
lg xERA 4.10
now 4.67
5.22
WHIPlower is better
Martín Pérez
.9401.49
now 1.06
1.37
Steven Matz
.9401.49
now 1.24
1.37

Volume · rest of season
Strikeoutshigher is better
Martín Pérez
4056
now 42
45
Steven Matz
4056
now 35
50
Winshigher is better
Martín Pérez
.0009
now 3
25
Steven Matz
.0009
now 4
37

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

If you already own them — trade angle
Sell HighMartín Pérez — sell high. His value is peaking; good time to trade him.conf 0.95
SellSteven Matz — sell.conf 0.90
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