Juan Martin del Potro of Argentina returns a shot against Roger Federer of Switzerland during the men's final at the ABN AMRO tournament at the Ahoy Arena in Rotterdam, Netherlands, Sunday, Feb. 19, ... more 
Juan Martin del Potro of Argentina returns a shot against Roger Federer of Switzerland during the men's final at the ABN AMRO tournament at the Ahoy Arena in Rotterdam, Netherlands, Sunday, Feb. 19, 2012. Federer won the match in two sets 6-1, 6-4. (AP Photo/Peter Dejong) less 
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Associated Press | Photo By Peter Dejong
Sun, Feb 19, 2012 10:44 AM EST