The Australian Open, one of the four Grand Slam tournaments, is the most prestigious (and exclusive) tournament in professional tennis.
Potential ways to finish that last sentence so it makes sense:
...in the eastern hemisphere.
...in January.
...if you're Andre Agassi.
...if you like watching live tennis at 2 AM.
...after the other three slams.
...played on hardcourt and not played in Flushing Meadows.
