Juan Martin Del Potro of Argentina returns a shot to Viktor Troicki of Serbia during their quarter final tennis match at the ABN AMRO tournament at the Ahoy Arena in Rotterdam, Netherlands, Friday, ... more 
Juan Martin Del Potro of Argentina returns a shot to Viktor Troicki of Serbia during their quarter final tennis match at the ABN AMRO tournament at the Ahoy Arena in Rotterdam, Netherlands, Friday, Feb. 17, 2012. (AP Photo/Peter Dejong) less 
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Associated Press | Photo By Peter Dejong
Fri, Feb 17, 2012 9:24 AM EST