Beach volleyball has reached bottom…or should I say, bottoms. Two British Olympic beach volleyball hopefuls, Shauna Mullin and Zara Dumpney, have agreed to sport QR (Quick Response) codes on their bikini bottoms during this week’s Visa FIVB Beach Volleyball International  Tournament in London. The QR codes, when photographed by a smartphone with a reader, will take the user to the betfair online gaming website.