For many years tournament players have spent many hours over many weeks trying to develop their Bidding Systems. These systems have never been published and seem to have remained a closely guarded secret. The Harris System has developed over a number of years by a group of tournament players with a major input from the international player Neil Rosen. Based on a five card major/strong no trump system there are a large number of "add ons" that mean that most bidding situations that players may face are dealt with. It is not suggested that players need to play the whole system rather that the system acts as a valuable starting point for players - at all levels - looking to develop a more comprehensive system than they might be currently be playing.