I opened 7 boxes and there were 2 back to back boxes from the same case that contained nearly identical YG. I had one pack containing 2 YG of the same player too that came from a different case.
In 7 boxes I had 11 duplicate YG, one of them being a triplicate.
Ive read some comments that some people are complaining their YG have rough cuts on them like 80s cards. I didn't see that however I did notice a lot of base cards with them.