Roger Federer, Rafael Nadal and Serena Williams — players with a combined 12 Wimbledon titles — won in straight sets Saturday to move into the fourth round and maintain their pursuit of more championship trophies at the All England Club.Six-time champion Federer defeated David Nalbandian 6-4, 6-2, 6-4 to move closer to equaling Pete Sampras' record of seven Wimbledon titles.Two-time winner and defending champion Rafael Nadal committed only three unforced errors in a 7-6 (6), 7-6 (5), 6-0 victory over Gilles Muller, a 92nd-ranked wild card from Luxembourg.Williams, chasing a third straight title and fifth overall in her comeback from nearly a year out with serious health problems, served 10 aces in downing 26th-seeded Maria Kirilenko 6-3, 6-2.
