Four-time major champion Naomi Osaka and World No. 1 Aryna Sabalenka headline the women's competition, while World No. 1 Jannik Sinner, Alexander Zverev and Americans Taylor Fritz and Tommy Paul will compete as well.

Naomi Osaka retired from her Australian Open third round match on Friday. The Japanese tennis star had just lost the opening set to Belinda Bencic via a tiebreak (7-3) before pulling the plug. It marked the first time she had withdrawn from a grand slam tournament match in her career.

Top-ranked Jannik Sinner, No. 2 Alexander Zverev, women’s No. 1 Aryna Sabalenka and former No. 1 Naomi Osaka will play exhibition matches March 1-2 in Las Vegas.