While "Murray Mania" grips Britain, it's the other men's semifinal at Wimbledon that has many tennis fans anticipating a griping matchup on Friday afternoon.

Six-time champion Roger Federer and last year's winner Novak Djokovic will face each other on the grass of Wimbledon for the first time - in their 27th head-to-head meeting.

A win against Djokovic on Friday, and another in Sunday's final, would put Federer back on top as the No. 1-ranked player. Two more victories at the All England Club would equal Pete Sampras' seven Wimbledon titles and tie the American's record for weeks spent at No. 1 with 286.