Well, one should choose a favorite team based on research and analysis not based on pure emotional attachment to win in sport betting. I personally have no favorite team but whenever I see a team performing better and even my research + analysis support that team's effort and gameplay then I consider that team as my favorite one in that tournament and I often bet in favor of it after doing further research about each individual player. I know that even with that I face some losses as no research can be perfect but the number of wins always outweigh the number of losses and that's what matter for me.