Canadian Open 2026 sees Tallon Griekspoor stun top seed Alexander Zverev in Montreal, while Felix Auger-Aliassime withdraws with injury and Daniil Medvedev, Andrey Rublev and Taylor Fritz suffer early exits in a dramatic day of major upsets. The post ATP Canadian Open 2026 Results: Tallon Griekspoor Stuns Alexander Zverev as Felix Auger-Aliassime Withdraws With Back injury appeared first on The Sunday Guardian .