R Federer (Sui) bt D Nalbandian (Arg) 6-4, 6-2, 6-4
Novak Djokovic held off an inspired Marcos Baghdatis 6-4 4-6 6-3 6-4 to reach the last 16 at Wimbledon.
Nadal upped his game at the key moments to overcome the spirited challenge of wildcard Gilles Muller 7-6(6) 7-6(5) 6-0 and advance to the last 16 at Wimbledon.