Wimbledon, England (Sports Network) - Wimbledon champion Roger Federer outlasted former U.S. Open titlist Juan Martin del Potro in an epic semifinal showdown Friday at the London Olympic Games. Federer will play in the gold medal match at the storied All England Club on Sunday.

The world No. 1 Federer won a war of attrition against the eighth-seeded del Potro, 3-6, 7-6 (7-5), 19-17, on the famed Centre Court. The Swiss great needed 4 hours, 25 minutes to stave off del Potro, who stunned Federer in the 2009 U.S. Open finale.

The 30-year-old Federer awaits the Novak Djokovic-Andy Murray winner.

Federer captured a men's-record-tying seventh Wimbledon title in this London suburb last month.

More to follow.

The Sports Network