The world No. 3 joins athletes Giannis Antetokounmpo, Michael Phelps and celebrities Ashton Kutcher and Mila Kunis as backers of a new league set to debut January 17.
The roster of analysts, reporters and personalities for studio and game coverage also features several respected women in sports, including Candace Parker, Lisa Leslie and Taylor Rooks.
The Australian Open is played on outdoor hard courts at Melbourne Park. Women play best-of-three-set matches; men play best-of-five. There are separate day and night sessions. The event lasts 15 days.