It's not exactly about skills, but about being lucky to pick the favorites and the underdogs on the right time, at the right place. Doesn't matter how hard you try to develop predictive skills, the luck factor will be determining, because the variables involved in one match until reaching the outcome are so many. It's humanly impossible to take all of them into consideration.

Here in Brazil, following the national championship, it's very hard to predict results, because not rarely the club considered the strongest of the competition ends losing to one of the bottom clubs. The difference in performance from one match to the following one is extreme. Therefore, results are unstable. How to be successful gambling in a scenario like that?