Teenager Victoria Mboko reached round three on her Grand Slam debut by easing to a 6-4 6-4 win over German world number 58 Eva Lys.
The 18-year-old from Canada came through qualifying without dropping a set, and will next face Olympic champion and eighth seed Zheng Qinwen of China, who earlier beat Colombian Emiliana Arango 6-2 6-3.
Ranked 333rd at the start of the year, this was Mboko’s 39th win of the season and moves her into the world’s top 100.
“I feel really happy right now, of course there is so much happening, even behind the scenes,” said the former Wimbledon juniors semi-finalist.
“But I feel like my family has been doing a good job of keeping me really isolated from it all.”
Meanwhile, 2017 French Open champion Jelena Ostapenko of Latvia battled back to win 5-7 6-3 6-3 against American Caroline Dolehide.
Ukrainian 13th seed Elina Svitolina defeated Hungarian Anna Bondar 7-6 (7-4) 7-5 but Croatia’s 18th seed Donna Vekic, who won Olympic silver at Roland Garros last year, was beaten 6-2 4-6 7-6 (10-3) by American world number 83 Bernarda Pera.
In the women’s doubles, Britain’s Jodie Burrage and Sonay Kartal fought back from a set down to win 6-7 (5-7) 7-5 6-3 against China’s Guo Hanyu and Japan’s Ena Shibahara in a rain-disrupted first-round match.
But Briton Harriet Dart and Australian partner Kimberly Birrell were beaten 7-6 (7-5) 3-6 6-2 by Romanian-Belgian duo Irina-Camelia Begu and Yanina Wickmayer.
