Three days of the 2012 WTA Championships are in the books, with only one day left in round-robin play before the semifinals and finals this weekend.
Half of the semifinalist field is already set. Serena Williams is the winner of the Red Group, having gone 3-0 in round-robin play, and she will face the runner-up of the White Group. Maria Sharapova is the winner of the White Group, as she is 2-0 in round-robin play, and even if she loses tomorrow to Samantha Stosur, she would hold tiebreakers over Agnieszka Radwanska and Sara Errani, having beaten both earlier this week.
So, what's on tap for Friday? The two matches that will determine who will join Williams and Sharapova in the semifinals. In the Red Group, world No. 1 Victoria Azarenka will face Li Na, and in the White Group, Radwanska and Errani will square off.
Here's a look at the two "elimination matches," as the winner will move on to the semifinals while the loser will begin the two-month offseason.