Declarer in Bridge' The term 'Declarer in Bridge' is a job description for the player who is sitting in the South position. This player is responsible for making the contract, which is the number of tricks that must be taken in order to win the hand. The Declarer in Bridge must also declare the trump suit, which is the suit that will be used to determine the winner of each trick. The Declarer in Bridge is the only player who can make the contract and declare the trump suit.