I said in my comment earlier in this thread a few pages back, Coach Barry has coached guys Rivers size at Tackle, Donovan Smith at Tampa Bay & he's their LT at 6'6 338lbs & Smith is not some big slow lumbering guy either he can move.
My comparison for Rivers is Daryl Williams out of Oklahoma, similar size, similiar ability, even similar ranking coming out of HS lol.
I like that Coach Barry will give him a shot at LT, him at that spot would an unmovable mountain, but I definitely think he can come in & play as a TF at RT. Plus the fact he's going to be an EE will pay huge dividends in getting him on the field early.
The fact he's a competitive weightlifter in HS means once he gets in our S&C program he's going to beast!