Almost every day there is a match in football, tennis, baseball or basketball, which is very popular among bettors. Usually hot matches are events featuring favorites and players bet money on them, what eventually lead to money loss.
Hot match is match, on which was betted of over 20% of all stakes.
For example: November 5, 2016 was very popular wager among players of football match of Germany Bundesliga Bayern Munich vs Hoffenheim. Almost all bettors placed bet on Bayern victory, wager price was 1.2. Bayern played in a draw 1:1 and huge number of players lost money.
When I was just starting to place bets and was rookie in sports betting, I lost a lot of money by betting on hot matches. I included hot matches in parlay and in most cases lost money because of this.
For successful betting, don't use hot matches and you will reduce number of losses.
So the twelfth bettors mistake: Bet on hot matches.