Japan's Naomi Osaka battled back from a set down to reach the second round of the French Open.
The top seed overcame Slovakia's Anna Karolina Schmiedlova 0-6, 7-6, 6-1.
She will next face Victoria Azarenka, who registered a 6-4, 7-6 win over 2017 champion Jelena Ostapenko.
Elsewhere, defending champion Simona Halep struggled in a 6-2, 3-6, 6-1 win over world number 47 Ajla Tomljanovic.
In the men’s competition, fifth seed Alexander Zverev needed four hours to beat Australia’s John Millman 7-6, 6-3, 2-6, 6-7, 6-3
Meanwhile, 40-year-old Ivo Karlovic became the oldest man to win a grand slam match since 1978.
The Croatian defeated Spain’s Feliciano Lopez 7-6, 7-5, 6-7, 7-5.

Brazil boss Ancelotti confident forward Neymar will recover for World Cup
PSG retain Champions League title with shoot-out win over Arsenal
French Open champion Gauff knocked out by Potapova in third round
Sabalenka sees off Kasatkina to reach French Open fourth round
Parry stuns Anisimova to reach first Grand Slam fourth round at French Open