Within a couple of years she will be a mom of a few cuddly kids, forget about rankings. I hope you remember what age the top players are - Federer is 24 and he has been dominating the tennis world for the last 5 years. And the kid from Mallorca just turned 19 and he is second only to Federer! In a few years Sania will loose her strength and stamina (whatever she has as Indians are far less physically blessed compared to their western compatriots) and with age comes the lack of desire to excel and reach new heights. In todays world of tennis you start at 16, peak at 20 and then start going downhill from 22. Case in point are the Sharapovas, the Clistjers, the Williams and the Hingises of the world. Ofcourse there are exceptions like Davenport but they are not really today's players. Davenport has been around for more than a decade. Today's players start planning for retirement at 22 and retire by 25. You don't mature late when you come in late, you get finished early when you come in late. Age takes it usual toll on the body (read strength and stamina) irrespective of when you come into the circuit.