Alexander Zverev reached his 21st Masters 1000 semi-final on Monday by ending the Canadian title defence of Alexei Popyrin 6-7 (8/10), 6-4, 6-3 at the ATP Toronto Masters."After losing the first set,

Top-seeded Alexander Zverev rallied to defeat No. 18 Alexei Popyrin of Australia 6-7 (8), 6-4, 6-3 on Monday to reach the semifinals of the National Bank Open.

Alexander Zverev came back from a set down on Monday to send Toronto reigning champion Alexei Popyrin packing and reach the semi-finals of the Canadian Open. The world number three dropped the first set but eventually defeated his Australian opponent 6-7 (8-10),