ISTANBUL, Turkey - Last year, Sara Errani became the fifth player since the institution of the round robin format at the season finale in 2003 to compete in both singles and doubles. And this year at the TEB BNP Paribas WTA Championships - Istanbul, she will become the first player to achieve the feat a second time - as she has clinched berths in both events. Here are the WTA Championships' results for the players who participated in singles and double at the season finale since 2003:
|Player||Year||Singles Result||Doubles Result|
Notes: Errani will play doubles at the season finale wiht Roberta Vinci for the second straight year ... Prior to the switch to the round robin format, three players won both the singles and doubles events at the WTA Championships in the same year. Martina Navratilova did it five times, Jana Novotna once and Martina Hingis once.