Boris Becker

Tennis legend Boris Becker started playing poker to help him improve his concentration. It worked - he became world number one, won six grand slam titles and became the youngest ever winner of the men's singles title at Wimbledon, aged just 17. He retired in 1999 and, after some sexual gymnastics that we won't go into, finally turned his attention to poker. In November 2007 the keen amateur became a celebrity ambassador for Team Pokerstars. He's no mug either: The German boasts career prize money of $61,250 and cashed in the 2009 EPT in Prague. He says: "I want to develop my poker skills and challenge myself to become really competitive at the highest levels in poker."