It's another early exit at the US Open for fourth-seeded Agnieszka Radwanska, who was upset in the second round by Peng Shuai.
Sloane Stephens' breakthrough, Maria Sharapova's breakdown and Serena Williams' dominance highlighted the 2013 Grand Slam events.
Good news for tennis fans: Serena Williams and Victoria Azarenka seem destined for another battle of the wills, this time in the US Open finals.
The Williams sisters seemed down and out, but 2012 proved to be a career year for Serena Williams. Her comeback was the biggest story of the year, but not the only one.
It was apparent early in the match that this won't be the year Poland's Agnieszka Radwanska endears herself to the American audience. Instead, there will be an all-Italian quarterfinal.