Victoria Azarenka, the world's No. 2 ranked female tennis player, will face world champion Serena Williams in an exhibition match in Bangkok, followed by the real thing at the Brisbane International, in preparation for the Australian Open.
Tennis grunting ban: Maria Sharapova's screams have been measured at more than 101 decibels. Martina Navratilova calls grunting "cheating, pure and simple" and wants tennis to ban it sooner rather than later.
Andy Roddick says he'll retire after the US Open. Roddick is the last American man to get a Grand Slam victory, the US Open in 2003. Roddick played in four Grand Slam finals, losing to Roger Federer in each.