MLB Daily DeltaWeek 16 · July 9, 2026
Portrait of Eury Pérez
Eury Pérez
MIA · P
Change to
Portrait of Spencer Arrighetti
Spencer Arrighetti
HOU · P
Change to
Who's more valuable, rest of season

Eury Pérez.

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

Eury Pérez wins 3 categories (K, ERA, WHIP); Spencer Arrighetti wins 1 (W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Eury Pérez
98.2
Spencer Arrighetti
92.4
Swinging-Strike %lg 11.0% · higher = better
Eury Pérez
14.6%
Spencer Arrighetti
11.6%
Strikeout %lg 22.0% · higher = better
Eury Pérez
27.6%
Spencer Arrighetti
23.9%
Chase %lg 28.5% · higher = better
Eury Pérez
30.7%
Spencer Arrighetti
27.9%
Hard-Hit % Allowedlg 40.0% · lower = better
Eury Pérez
39.3%
Spencer Arrighetti
30.0%
Barrel % Allowedlg 8.0% · lower = better
Eury Pérez
13.8%
Spencer Arrighetti
7.4%
xwOBA Allowedlg .315 · lower = better
Eury Pérez
.316
Spencer Arrighetti
.334
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
Eury Pérez
25.90
lg xERA 4.10
now 4.60
4.15
Spencer Arrighetti
25.90
lg xERA 4.10
now 1.34
4.50
WHIPlower is better
Eury Pérez
1.031.47
now 1.26
1.27
Spencer Arrighetti
1.031.47
now 1.13
1.37

Volume · rest of season
Strikeoutshigher is better
Eury Pérez
4087.80
now 72
75
Spencer Arrighetti
4087.80
now 43
59
Winshigher is better
Eury Pérez
.00017.40
now 3
24
Spencer Arrighetti
.00017.40
now 7
613

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

If you already own them — trade angle
Hold · steadyEury Pérez — hold.conf 0.60
Sell HighSpencer Arrighetti — sell high. His value is peaking; good time to trade him.conf 0.95
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