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.

TURIN (Reuters) -Italian world number one Jannik Sinner eased past Daniil Medvedev 6-3 6-4 in their final group match on Thursday, leaving Taylor Fritz to seal a place in the semi-finals of the season-ending ATP Finals after the American defeated Alex de Minaur 5-7 6-4 6-3.

Over his last 10 tournaments, Medvedev has won 79.8% of his service games and 28.8% of his return games. de Minaur has won 78.6% of his service games over his last 10 tournaments, and 37.0% of his return games.