MLB Daily DeltaWeek 19 · July 31, 2026
Portrait of Coby Mayo
Coby Mayo
BAL · 3B
Change to
Portrait of Matt Chapman
Matt Chapman
SF · 3B
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

Coby Mayo wins 2 (RBI, SB); Matt Chapman wins 2 (R, AVG); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Avg Exit Velolg 89.0 · higher = better
Coby Mayo
92.6
Matt Chapman
88.2
Hard-Hit %lg 40.0% · higher = better
Coby Mayo
50.0%
Matt Chapman
35.8%
Barrel %lg 8.0% · higher = better
Coby Mayo
11.9%
Matt Chapman
6.6%
Chase %lg 28.5% · lower = better
Coby Mayo
31.1%
Matt Chapman
26.4%
Swinging-Strike %lg 11.0% · lower = better
Coby Mayo
14.8%
Matt Chapman
10.3%
xwOBAlg .315 · higher = better
Coby Mayo
.305
Matt Chapman
.286
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
Coby Mayo
.200.250
lg AVG .295
now .199
.196
Matt Chapman
.200.250
lg AVG .295
now .234
.222

Volume · counting stats
Home Runshigher is better
Coby Mayo
57.60
now 6
4
Matt Chapman
57.60
now 2
4
Runshigher is better
Coby Mayo
2031.80
now 18
15
Matt Chapman
2031.80
now 27
17
RBIhigher is better
Coby Mayo
2024.20
now 19
16
Matt Chapman
2024.20
now 21
13
Stolen Baseshigher is better
Coby Mayo
.0002.20
now 1
1
Matt Chapman
.0002.20
now 0
0
If you already own them — trade angle
Hold · leans sellCoby Mayo — hold.conf 0.60
SellMatt Chapman — sell.conf 0.61
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