Kasatkina also beat Ostapenko in the third round of last year’s U.S. Open and defeated Garbiñe Muguruza, the 2017 Wimbledon champion, on her way to the final in Dubai last month.

Kasatkina and Ostapenko have a natural rapport on camera, made sweeter by their references to the past. "They were young and stupid," Zabiiako said. "Now they are mature." For her part, Kasatkina ...

In the background, a reporter struggles to include all four individuals within the frame of a battered Android device. This moment is an indication of the snowballing success of Zabiiako and Kasatkina ...