The answer to post#1 above is pretty obvious by a look at the lettering clearly printed alongside USA in the pic I posted as #21 on the thread Comments Please (to which Sebbie added post#24 to give the ID of the young diver unknown to me , and the link to his YouTube vid. where he communicates with his fans - and not to mention also the dollars tendered by Li-Ning for the contract, as explained by P S Dave).
Shaulis is right - I encountered the same Great Wall when searching info. after finding the first two US divers (as shown in post #1).