Still, it will depend on our knowledge of the sport that we are betting for however there are instances where we do have a choice that is already set but the odds will probably make us change our mind and one reason could be the very small profit that we will make when betting for the heavy favorites.
But sometimes with our good knowledge in sports and being able to determine predictions for the favored team also does not rule out the possibility of failure, as comparison this season there are many big team that have lost while they are still favored by the bookies and given odds as the favorite team so that in the end the bettors lose their money.
It seems that whether it is favored or not and how the odds given by the bookie for the current conditions are not so dominant can show not satisfactory results, it is much better when we can determine other options provided by the bookie such as Double Chance, Asian Total and so on.