A Grand Slam or Major tournament is the highest-tier event in tennis. It starts with the Australian Open in January, then the French Open in June, Wimbledon in July, and finally the US Open in September.

Grand Slam winners' checks are some of the richest in the sport, but proportionally the players get a rawer deal than their counterparts.

Defending singles champions Jannik Sinner and Aryna Sabalenka will begin their campaigns with easy first-round fixtures at Melbourne Park while the 10-time champions Novak Djokovic will take on Nishesh Basavareddy in his first match on Monday.