Prediction is always a hard decision, and may not be mastered by any gambler. Trying to advance in it, will only deceive the player, as a result of the eccentric outcomes of matches. A times, the winner of a match can be predicted, based on the unequal strengths of players in both teams. But, most often, the surprises of watching incompetent teams beat strong opponents worsens the purpose of trying to develop in forecasting games.
Anything that means forecasting is going to be very complicated , because there are many factors that can influence the decision of many things, among them is luck, many times it can change even go against us, in sports it happens, not to mention betting on the South American World Cup qualifiers where anything can happen, Argentina losing to Colombia , and Bolivia winning all its games at the altitude of "el Alto" in Bolivia , are things that sometimes take us out of normal logic and can turn the results around, it is a simple example of the things that can happen.