Carlos Alcaraz battled through a rain interruption to claim his 50th win of the season, defeating Jordan Thompson 7-5, 4-6, 6-3 on Wednesday at the Cincinnati Open
Aryna Sabalenka will face either former US Open champion Sloane Stephens or Kazakhstan's Yulia Putintseva in the fourth round.
Gauff, 18 years old and ranked 23 in the world, triumphed 7-5, 6-2. She will face Italy's 59th-ranked Martina Trevisan for a place in Saturday's championship match.
Australian Open 2022: Emma Raducanu cruised past Sloane Stephens in her first-round match at the Australian Open.