No. 2 Alexander Zverev stopped No. 4 Carlos Alcaraz 7-6(5), 6-4 to score his eighth straight win and book his spot in the ATP Finals semifinals.

Sinner has now won eight of his last nine against Medvedev.

Taylor Fritz moved closer to a second straight ATP Finals semifinal with a 5-7, 6-4, 6-3 comeback conquest of Alex de Minaur in Turin today.

The German will head into Friday at the top of the table.

World No. 3 Carlos Alcaraz denied two set points in the tiebreaker fending off Andrey Rublev 6-3, 7-6(8) at the ATP Finals.

The Italian isn't qualified for the semifinals yet, but he's on the cusp.