While size certainly matters (size matters!), but position is even more important. And, being in the right position at the table matters more than most people think. Position, in poker, is where you sit relative to the dealer button. The table is designed to have the dealer button on the far left and the small blind and dealer button on the far right. Therefore, the person who is the first to have their say in pre-flop will have position on the first player to act behind him.
The player who is the last to act in any round of betting is sitting in the biggest positional advantage since he is in the best position to receive the cards he needs to have a strong hand. The player in the big blind is the last player to act for the remainder of the hand. Because the player in the big blind is sitting in the big seat, he is the last player to have position on the players remaining in the hand after the big blind.
The player who actives in the last three seats to the left of the big blind is sitting in the smallest positional advantage. Since the player who acts last is always the last one to have position after the flop, the player in the small blind will always be in the best position to act behind the big blind. After the flop, the player in the small blind is in the best position to act again, since he is the player left to the big blind.
It is also important to think about positional play for a different hand. Let's use a standard heads-up match. It's a two-card game, standard.
In this situation, the blinds are $50-$100. The big blind is $25 and the small blind $5. There are two players left and there are $400 in the pot. The flop comes down $200/$400 with two clubs.
The first player bets $50, another player calls, and the last player raises to $150. Since his cards are marginal, the player in the big blind should fold. He shouldn't call the bet, however, since it is folded after a raise. The problem for the player in the big blind is that he cannot tell how the player in the small blind has acted. He has no clue whether the small blind has a monster hand or just a plain one. The player in the big blind may indeed have a monster hand, but the small blind may be calling with any number of cards. Moreover, the player in the big blind may be slow playing his hand, making a passive play. The player in the big blind may be playing the same hand as the player in the small blind.
Now, think that the flop has added some more information to the situation. Let's say that the big blind folded a hand that he probably should have bet with, leaving the pot $300. On the turn, the small blind also checks to the raiser, who now owns the hand. How should the player in the big blind act? Observe how the betting and raising takes place. Sometimes the player in the big blind will slow play the hand, and sometimes he will bet it out. Telling you to bet is a passive move, but at times, betting is out of character for that player and he will raise without being consciously aware of it. You must have observed the player in the big blind to accurately predict which hand he is holding. It doesn't matter whether he wins the hand in the end. You have just improved your position in the tournament. Sometimes the player in the big blind will use the opportunity to attempt to steal the pot. If you call the bet, you will be increasing the size of the pot. Since you are going to win the blind, this should be considered a profitable play.
Concentrate on your opponents' actions at the bola88, rather than whether your hand is better than theirs is. Pay attention to how they play as opposed to their cards, and you will know when to bet or not bet.