You should first understand the meaning of the word "contest" itself, if you understand you will know why sports bets cannot be made as a contest.

In short, the contest is often colored with competition or competition, assessment criteria and so on or something activities are taken from the criteria, competition or the ability of participants in the contest itself, of course the final results of the contest are taken from the best.

For that online casino often uses contests in slot games, in slot games there are doubles or the highest or best blows during games such as 200x 100x and so on, whereas in sports betting you cannot double or hit, you are only placed to bet 1x2.

Sports contests can be done specifically at the event or the best competition team and record, in gambling betting cannot, because you don't play like slots, sports betting you cannot compete or create victory, abilities, competition such as slots.