Alcaraz retires in Rio, Sinner'sees' number 2 - Tennis. Ankle pain for the Spaniard.

Indian Wells is approaching and there are only 535 points between the two (ANSA) Alcaraz hasn't won an ATP title since winning at Wimbledon against Novak Djokovic last July. In Rio the game is played on the clay of the Jockey Club Brasileiro, where rain had delayed the start of the match by three hours.