China's Zheng pulls out of season-opening United Cup

The 22-year-old is coming off a breakthrough season that reaped three singles titles, with the highlight winning Olympic gold in Paris. She also made her first Grand Slam final, at Melbourne Park, losing in straight sets to current world number one Aryna Sabalenka on the back of playing the mixed-teams United Cup. Zheng has opted for more rest this time ahead of the season-opening major from January 12. "After the long season that 2024 was for me, I need a few extra weeks of rest, recovery, and...