DOHA, Qatar - With a little bit of an assist from a perfectly-placed birthday, there was even more history made on Monday, following the results of the Qatar Total Open. With Serena Williams now the World No.1 in singles and doubles World No.1 Roberta Vinci celebrating her 30th birthday today, this is just the second time in WTA history 30-somethings have topped both singles and doubles rankings:

October 18, 1986 to August 16, 1987
(43 weeks & 1 day)
Singles No.1: Martina Navratilova (age 30)
Doubles No.1: Martina Navratilova (age 30)

February 18, 2013 to February 24, 2013
(1 week)
Singles No.1: Serena Williams (age 31)
Doubles No.1: Roberta Vinci (age 30)

Click below to check out the full WTA Rankings in both disciplines for February 18, 2013...