London 2012 Olympics Men's Tennis Update - Aug 2

Wimbledon, England

THURSDAY'S QUARTERFINAL MATCHES

Roger Federer (1) leads John Isner (10), 6-4, 1-2
Novak Djokovic (2) def. Jo-Wilfried Tsonga (5), 6-1, 7-5
Andy Murray (3) def. Nicolas Almagro (11), 6-4, 6-1
Juan Martin del Potro (8) leads Kei Nishikori (15), 6-4, 5-2