13-time Grand Slam champion Serena Williams is currently training hard ahead of the Wimbledon 2011 tournament which starts later this month. The American former world number one is the defending wimbledon champion.
According to an article of Nakia Hogan of the New Orleans Times-Picayune, Williams has been working with renowned fitness guru Mackie Shilstone the past few weeks. Shilstone has been conducting several exercises, including improving Williams’ fitness, balance and footwork.
