Veronika Kudermetova, the seventh seed, defeated Britain's Harriet Dart 6-3, 7-6 (7/4), and eighth-seeded Russian Alexandrova defeated Anna Kalinskaya 6-7, 6-1, 7-5.
Ekaterina Alexandrova and Veronika Kudermetova, both from Russia, defeated their opponents on Tuesday to go to the second round of the Pan Pacific Tennis in Tokyo.
Veronika Kudermetova, the seventh seed, defeated Britain's Harriet Dart 6-3, 7-6 (7/4), and eighth-seeded Russian Alexandrova defeated Anna Kalinskaya 6-7, 6-1, 7-5.
Donna Vekic of Croatia was defeated by 2021 French Open runner-up Anastasia Pavlyuchenkova, 6-1, 6-1.
Iga Swiatek, the winner of the French Open, and Jessica Pegula, the fourth-ranked player in the world, will both compete in the Japanese event beginning on Wednesday.
Elena Rybakina, who reached the Australian Open final, withdrew, organisers announced on Monday.
On Sunday, the $780,637 tournament will come to an end.On Sunday, the $780,637 tournament will come to an end.