Maria Sharapova was the defending Defending champion in women 's singles , but lost Competition in the final Competition to Serena Williams .

Serena Williams won an Open Era record Recording six women 's singles championships by defeating Conquering Maria Sharapova in the final , and this was the second time they met Come_together each other in the final .

Federer and Williams were two of a number of big-name casualties in the early rounds , along with two-time champion Rafael Nadal , two-time semifinalist Jo-Wilfried Tsonga , 2004 champion Maria Sharapova and former World No .