MLB Daily DeltaWeek 19 · August 4, 2026
Portrait of Joe Mack
Joe Mack
MIA · C
Change to
Yainer Diaz
HOU · C
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

Joe Mack wins 2 (HR, R); Yainer Diaz wins 2 (RBI, AVG); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Avg Exit Velolg 89.0 · higher = better
Joe Mack
89.0
Yainer Diaz
87.7
Hard-Hit %lg 40.0% · higher = better
Joe Mack
41.8%
Yainer Diaz
34.3%
Barrel %lg 8.0% · higher = better
Joe Mack
10.3%
Yainer Diaz
5.8%
Chase %lg 28.5% · lower = better
Joe Mack
26.9%
Yainer Diaz
41.8%
Swinging-Strike %lg 11.0% · lower = better
Joe Mack
11.5%
Yainer Diaz
12.5%
xwOBAlg .315 · higher = better
Joe Mack
.322
Yainer Diaz
.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
Joe Mack
.200.280
lg AVG .295
now .209
.244
Yainer Diaz
.200.280
lg AVG .295
now .238
.262

Volume · counting stats
Home Runshigher is better
Joe Mack
54.20
now 0
3
Yainer Diaz
54.20
now 2
2
Runshigher is better
Joe Mack
2014.20
now 7
11
Yainer Diaz
2014.20
now 7
8
RBIhigher is better
Joe Mack
2020
now 6
9
Yainer Diaz
2020
now 14
16
Stolen Baseshigher is better
Joe Mack
.0001.20
now 0
0
Yainer Diaz
.0001.20
now 0
0
If you already own them — trade angle
Hold · steadyJoe Mack — hold.conf 0.60
Hold · steadyYainer Diaz — hold.conf 0.60
Tweet