Iga Swiatek, Coco Gauff and Naomi Osaka all made it through comfortably to the last 32 of the Italian open in Rome.
Poland's world number one Swiatek, who is aiming to win the title in Rome for a third time, dominated American Bernarda Pera on the way to a 6-0 6-2 win in one hour 17 minutes.
American Gauff was a 6-3 6-3 winner against Poland's Magdalena Frech in one hour 28 minutes.
Japan's Osaka completed a 6-3 6-2 win against world number 20 Marta Kostyuk, of Ukraine.
The straightforward rain-interrupted win in one hour 11 minutes gave Osaka her first career victory against a top 20 player on clay.