Alexander Zverev reached his 21st Masters 1000 semifinal on Monday by ending the Canadian title defence of Alexei Popyrin 6-7 (8/10), 6-4, 6-3 at the ATP

The Toronto quarterfinals feature a mix of momentum and muscle, with a couple of matchups that wouldn’t have been predicted at the start of the week. Several players have stepped up under the spotlight,

Top-seeded Alexander Zverev advanced to an ATP Toronto Masters quarter-final against defending champion Alexei Popyrin as his fourth-round opponent Francisco Cerundolo was forced to retire with an abdominal injury on Saturday.