MLB Daily DeltaWeek 18 · July 27, 2026
Portrait of Mark Vientos
Mark Vientos
NYM · 1B
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Portrait of Salvador Perez
Salvador Perez
KC · DH
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Who's more valuable, rest of season

Mark Vientos.

He projects to help you in more roto categories the rest of the way — RBI and average.

Head-to-head
HR
R
RBI
SB
AVG

Mark Vientos wins 2 categories (RBI, AVG); Salvador Perez wins 1 (HR); 2 even.

04

Under the hood

Underlying skill — each value vs league avg
Avg Exit Velolg 89.0 · higher = better
Mark Vientos
89.5
Salvador Perez
89.0
Hard-Hit %lg 40.0% · higher = better
Mark Vientos
43.8%
Salvador Perez
42.5%
Barrel %lg 8.0% · higher = better
Mark Vientos
10.1%
Salvador Perez
10.3%
Chase %lg 28.5% · lower = better
Mark Vientos
36.6%
Salvador Perez
45.6%
Swinging-Strike %lg 11.0% · lower = better
Mark Vientos
17.2%
Salvador Perez
14.6%
xwOBAlg .315 · higher = better
Mark Vientos
.310
Salvador Perez
.297
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 · batting average
AVGhigher is better
Mark Vientos
.200.240
lg AVG .295
now .224
.220
Salvador Perez
.200.240
lg AVG .295
now .206
.210

Volume · counting stats
Home Runshigher is better
Mark Vientos
511
now 7
4
Salvador Perez
511
now 9
5
Runshigher is better
Mark Vientos
2024.20
now 19
15
Salvador Perez
2024.20
now 21
15
RBIhigher is better
Mark Vientos
2029.60
now 26
21
Salvador Perez
2029.60
now 25
17
Stolen Baseshigher is better
Mark Vientos
.0001.20
now 0
0
Salvador Perez
.0001.20
now 0
0
If you already own them — trade angle
Buy LowMark Vientos — buy low. The dip is a window to acquire.conf 0.66
SellSalvador Perez — sell.conf 0.59
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