Jannik Sinner defeated Alexander Zverev in straight sets, 6-4, 6-3, at the ATP Finals in Turin to become the first semifinal qualifier in the Björn Borg group.The match lasted 1 hour and 36 minutes, where Sinner had a 71% first serve rate and 83% win rate on those serves.Zverev, who earlier defeated Ben Shelton, now needs to win his next match against Félix Auger-Aliassime to keep his hopes of advancing alive.