The Australian Open
is a tennis tournament held annually over the last fortnight of January at Melbourne Park in Melbourne, Australia. The tournament is the first of the four Grand Slam tennis events held each year, preceding the French Open, Wimbledon, and the US Open. It features men's and women's singles; men's, women's, and mixed doubles; junior's championships; and wheelchair, legends, and exhibition events. Prior to 1988 it was played on grass courts, but since then three types of hardcourt surfaces have been used; green coloured Rebound Ace up to 2007, blue Plexicushion from 2008 to 2019, and blue GreenSet since 2020.