Gauff could hit some of the hardest first serves on tour, but her iffy second serve and wonky forehand had never been a secret. When she hits a forehand, she uses what’s known as an extreme Western grip,

MELBOURNE, Australia — It was a meaningless hit-and-giggle session, a mixed doubles exhibition at Rod Laver Arena just for fun and charity in front of fans a few days ahead of the Australian Open , so Coco Gauff was calling out how fast she would try to hit some serves.

No. 3 seed Coco Gauff able to "step up my level" at the right time to dispatch Jodie Burrage in second round at Melbourne.