Bonus points were awarded to players who were nominated to play in certain 1973 Davis Cup ties and who miss tournaments through competing in those ties.
[2] The Commercial Union Assurance Masters is included in this calendar but did not count towards the Grand Prix.
Group AA consisted of the Triple Crown – the French Open, the Wimbledon Championships and the US Open – while the other tournaments were divided into Groups A, B and C by prize money and draw size.
Points were allocated based on these groups and the finishing position of a player in a tournament.
No points were awarded to first round losers and ties were settled by the number of tournaments played.