Rybakina retires in Cincinnati quarter-final, faces MRI scan ahead of US Open

Jelena Rybakina retired at 1-4 in the first set of her Cincinnati quarter-final, handing Iga Świątek a walkover into the semi-finals. The Kazakh player revealed after the match that the injury is serious and she will require an MRI scan. She now faces a race against time to be fit for the US Open.