MLB Daily DeltaWeek 14 · June 30, 2026
Portrait of Martín Pérez
Martín Pérez
ATL · P
Change to
Portrait of Robbie Ray
Robbie Ray
SF · 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 — ERA and WHIP.

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

Martín Pérez wins 2 categories (ERA, WHIP); Robbie Ray 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
Martín Pérez
90.0
Robbie Ray
93.3
Swinging-Strike %lg 11.0% · higher = better
Martín Pérez
9.7%
Robbie Ray
11.9%
Strikeout %lg 22.0% · higher = better
Martín Pérez
20.7%
Robbie Ray
20.7%
Chase %lg 28.5% · higher = better
Martín Pérez
26.3%
Robbie Ray
28.7%
Hard-Hit % Allowedlg 40.0% · lower = better
Martín Pérez
37.3%
Robbie Ray
39.1%
Barrel % Allowedlg 8.0% · lower = better
Martín Pérez
6.5%
Robbie Ray
9.6%
xwOBA Allowedlg .315 · lower = better
Martín Pérez
.313
Robbie Ray
.331
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
2.135.11
lg xERA 4.10
now 2.79
4.03
Robbie Ray
2.135.11
lg xERA 4.10
now 4.45
4.41
WHIPlower is better
Martín Pérez
.9201.54
now 1.06
1.34
Robbie Ray
.9201.54
now 1.40
1.37

Volume · rest of season
Strikeoutshigher is better
Martín Pérez
4093.80
now 42
51
Robbie Ray
4093.80
now 59
79
Winshigher is better
Martín Pérez
.4007.60
now 3
36
Robbie Ray
.4007.60
now 3
25

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
Sell HighRobbie Ray — sell high. His value is peaking; good time to trade him.conf 0.95
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