American Taylor Fritz won his first match in the group stage of the ATP Finals when he beat Daniil Medvedev 6-4 6-3 on Sunday after the Russian lost his cool and risked getting defaulted by his bizarre antics.

U.S. Open finalist Taylor Fritz benefitted 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,

Taylor Fritz kept his cool in the face of an irate Daniil Medvedev to win the opening match of the ATP Finals in straight sets. American Fritz recorded his 50th win of the year by beating Medvedev 6-4 6-3 at the season-ending tournament in Turin, Italy.