Still plenty to play for in group Ilie Nastase, although the scenarios where Jannik Sinner doesn’t make the semifinals or Alex de Minaur does are mostly theoretical.

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.