If you're a tennis fan, it's time to start the annual process of adjusting your sleep schedule for the Australian Open.
The draw for the year's first Grand Slam event takes place on Thursday night in Melbourne—though that's early Thursday morning if you're on the East Coast of the United States.
Several top players—including Serena Williams, Andy Murray, Victoria Azarenka and Kei Nishikori—won't participate in this year's tournament for a variety of health–related and personal reasons. Simona Halep, yet to win a major title, is No. 1 in the WTA rankings, while Rafael Nadal holds the top spot in the ATP rankings.