Studying one’s opponents is always a good tactic.
Many times, a player will display a certain pattern of behavior whether he is aware of it or not.
This pattern may tell whether an opponent has a strong solid hand or he’s just bluffing.
When a series of actions has been made by players, one could have an early assessment on who the weak players are.
From there, a player could develop an early strategy on how to take these players out of the game.