I am betting approximately 6 years. Firstly, I started to bet on Football. Then I started concentrate on Tennis. But, I am also betting on NBA. I have a one rule if u wanna get a benefit from betting u should concentrate on 2-3 sports, for this i am betting mostly tennis, basketball and sometimes football. However, i am also betting the most important tournament for example World Cup, Europe Championship and so on. Because, for example Volleyball world cup, I am starting to watch all matches and then it is easy to bet for next match. I am assertive i will do good job!!! Just follow me...