Sumo player sport in japan is a sport specifically for adults, sumo game participants have a monthly income exceeding $ 25,000 per month, they are the most influential and respected people in Japan, it's for a game that is quite professional, you definitely know what kind of sumo game wins and loses, the opponent's feet just a little out of the arena is guaranteed to lose.
For that if you talk about the game sumo can be cheated, of course it is a secret for both opponents in the betting agreement, I do not want to say it could be cheating or otherwise maintain the reputation of winning.
Which I often find the words of the sumo bettor as below.
Win-lose data suggests “quid-pro-quo agreement: you let me win today, when I really need a win, and I'll let you win another time.”
Of course it was said with full consideration on the grounds that they both know it, you yourself understand the word above its purpose.