Novak Djokovic and Maria Sharapova decide to finally settle their score in a series of 3 challenges. This is how it all starts.

Can't remember what happened before? Watch the press conference:
//www.youtube.com/watch?v=GPnS-dLssiI&feature=plcp

Speed vs. Instinct: Make your choice on //www.head.com/tennis.

And keep in touch with HEAD Tennis: //www.facebook.com/headtennis