Originally Posted by Protoss
I'd say 31 is old in tennis though.
Plus she's played 662 singles matches in her career. A lot of players start to decline after around 600 matches played.
31 is not that old in todays game. There are atleast 4 30+ players in the top 30 and a couple 29 year olds too. Some include Na li, Vinci and Petrova, all are playing the best tennis of their career at this age.