MLB Daily DeltaWeek 18 · July 23, 2026
Portrait of Brent Rooker
Brent Rooker
ATH · DH
Change to
Portrait of Mark Vientos
Mark Vientos
NYM · 1B
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22, 1 even. Take whoever fills a bigger need.

Head-to-head
HR
R
RBI
SB
AVG

Brent Rooker wins 2 (RBI, SB); Mark Vientos wins 2 (R, AVG); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Avg Exit Velolg 89.0 · higher = better
Brent Rooker
89.9
Mark Vientos
89.5
Hard-Hit %lg 40.0% · higher = better
Brent Rooker
41.9%
Mark Vientos
43.8%
Barrel %lg 8.0% · higher = better
Brent Rooker
15.4%
Mark Vientos
10.1%
Chase %lg 28.5% · lower = better
Brent Rooker
31.0%
Mark Vientos
36.6%
Swinging-Strike %lg 11.0% · lower = better
Brent Rooker
19.1%
Mark Vientos
17.2%
xwOBAlg .315 · higher = better
Brent Rooker
.314
Mark Vientos
.310
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
Brent Rooker
.200.240
lg AVG .295
now .194
.185
Mark Vientos
.200.240
lg AVG .295
now .224
.221

Volume · counting stats
Home Runshigher is better
Brent Rooker
59.20
now 8
5
Mark Vientos
59.20
now 7
5
Runshigher is better
Brent Rooker
2022.20
now 15
14
Mark Vientos
2022.20
now 19
16
RBIhigher is better
Brent Rooker
2029.20
now 26
25
Mark Vientos
2029.20
now 26
22
Stolen Baseshigher is better
Brent Rooker
.0003.20
now 2
2
Mark Vientos
.0003.20
now 0
0
If you already own them — trade angle
Hold · steadyBrent Rooker — hold.conf 0.60
Buy LowMark Vientos — buy low. The dip is a window to acquire.conf 0.66
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