Sinner stays perfect and Fritz also advances to the semifinals at the ATP Finals
Italy's Jannik Sinner returns the ball to Russia's Daniil Medvedev during their singles tennis match of the ATP World Tour ...
beIN Sports31m
Perfect Sinner cruises into final four
Top seed Jannik Sinner produced a steely performance to ease past Daniil Medvedev 6-3, 6-4 in their final round-robin match ...