Join Tanya Aldred for updates as Yannik Sinner looks to complete a sweep of his group by beating Daniil Medvedev.   19:34 In the head to heads, both Sinner and Medvedev have won matches seven apiece,

U.S. Open finalist Taylor Fritz frustrated Daniil Medvedev to the point that that the Russian broke his racket and was docked a point in a 6-4, 6-3 victory for the American in the opening match of the ATP Finals.

Jannik Sinner became the first player to reach the semifinals at the ATP Finals after Taylor Fritz defeated Alex de Minaur. Sinner, who faces Daniil Medvedev next, has already secured his place in the last four.