This game you have to bet on all bets made in tournaments is free, this will for example by rounds if you bet more than your opponent to get well below the other rounds. This game will rank you can compare with others of your parents, just tell the 16 best tournaments of individuals and pairs as well. Go see the ATP and WTA both categories and you can register in only two in a tournament.
You can bet the tournament are:
there are tournaments for now
Sign Up until Friday until 20:00 GMT on firstname.lastname@example.org
mail where you have to put your name \ nickname and country