
Alexei Popyrin has got his Miami Open campaign off to a winning start after his opponent Mikael Ymer retired at 1-0 down and 4-4 in the second set.
Popyrin, the sole Australian winner across the ATP 1000 Masters event and the WTA tournament on Wednesday, had taken the opening set 7-6 (7-5) before his Swedish rival pulled up with an ankle injury.