The person in the photo on the right is less mature than what I believe a seventeen, nearly eighteen year old would be. The peron in the photo on the left is more mature looking, perhaps even more bulked up ... and Treyvon was into football and perhaps bulking up, wasn’t he? Your side-by-side makes me wonder if it would be of any use to review all the store videos again, to see if I can catch glimpses of facial characteristics which would be reconciled by one of the photos. I think I’ll do that ...
Good luck finding them.
I was under the impression that he played football in middle school only, but I could be wrong. He was born on February 5, 1995 so he was just 3 weeks out of being 16-years old.