MLB Daily DeltaWeek 19 · August 2, 2026
Portrait of Eury Pérez
Eury Pérez
MIA · P
Change to
Portrait of Landen Roupp
Landen Roupp
SF · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22. Take whoever fills a bigger need.

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

Eury Pérez wins 2 (K, WHIP); Landen Roupp wins 2 (ERA, 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
Landen Roupp
92.9
Swinging-Strike %lg 11.0% · higher = better
Eury Pérez
14.4%
Landen Roupp
10.7%
Strikeout %lg 22.0% · higher = better
Eury Pérez
26.5%
Landen Roupp
24.0%
Chase %lg 28.5% · higher = better
Eury Pérez
32.2%
Landen Roupp
30.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Eury Pérez
39.2%
Landen Roupp
29.4%
Barrel % Allowedlg 8.0% · lower = better
Eury Pérez
10.3%
Landen Roupp
4.2%
xwOBA Allowedlg .315 · lower = better
Eury Pérez
.303
Landen Roupp
.290
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
3.035.05
lg xERA 4.10
now 4.60
3.82
Landen Roupp
3.035.05
lg xERA 4.10
now 4.22
3.48
WHIPlower is better
Eury Pérez
1.191.43
now 1.26
1.26
Landen Roupp
1.191.43
now 1.31
1.36

Volume · rest of season
Strikeoutshigher is better
Eury Pérez
4081.20
now 72
51
Landen Roupp
4081.20
now 72
49
Winshigher is better
Eury Pérez
.0006.60
now 3
13
Landen Roupp
.0006.60
now 5
25

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

If you already own them — trade angle
Sell HighEury Pérez — sell high. His value is peaking; good time to trade him.conf 0.80
BuyLanden Roupp — buy.conf 0.79
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