Some things just don't change. If you've got the sound on, you'll hear explosive grunts coming from a very little Maria Sharapova. Playing in a junior tournament, the Russian hits a backhand winner and lets out a "Davai" (or "Come on").

Who could have predicted that that young girl would grow up to become a Wimbledon champion at just 17 years old, a world No. 1 a few years later and the most high-profile tennis player in recent history to be embroiled in a doping scandal.

Sharapova is going to get to return to the sport she's been so good at since an early age. The 29-year-old is expected to be back in action in April after serving a reduced 15-month suspension.