... sometimes there are some who are very strategic and have a very peculiar way of playing, sometimes in the first Rounds lose on purpose and then they start betting a lot and win, I don't know, they may have a period of getting to know their rivals.
In a tournament I don't know how viable that is, but I know there are people who are very enlightened about playing poker, however in the casinos I haven't seen much action on it.
That thing about losing on purpose is all very well in the movies but I doubt it happens in reality, we're not talking about pool, we're talking about poker. Even the best player in the world loses if he gets bad cards, it doesn't depend on him alone.
And it is even less viable to do it in tournaments, because if he loses all the chips he is eliminated and in tournaments in initial phases it is not so important to win chips as not to lose them.
I think @LUCKMCFLY was talking about losing some small amounts in the initial part of a tournament, when all your intentional losses combined is less than 10% of your total chips. Like betting a small amount while having nothing, and losing it to someone who calls, and thus showing your opponents that you are tend to bluff way too much, while in fact you are not an gressive player. It can work. I myself use this strategy from time to time.