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.

Daniil Medvedev addressed doubters who said his career was "finished" after getting his first win of the week at the ATP Finals. The Russian had a self-confessed "tantrum" in his opening round-robin match against Taylor Fritz, receiving a point penalty and threatening to retire. But he turned things around to beat Alex de Minaur on Tuesday.

Taylor Fritz benefited from a questionable serving decision by Daniil Medvedev and frustrated his opponent so much 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.