Top seed Zverev ousted in ATP Montreal opener
Alexander Zverev fell to Dutchman Tallon Griekspoor in his first match at the ATP Montreal tournament, on the same day second seed Felix Auger-Aliassime withdrew with a back injury.
Top seed Alexander Zverev has been knocked out of the ATP tournament in Montreal, losing his opening match to Dutchman Tallon Griekspoor.
Griekspoor, ranked 69th in the world, dispatched the third-ranked German — who had received a first-round bye — after two hours and 34 minutes to book his place in the third round.
It was Zverev's first match since he finished runner-up to Jannik Sinner at Wimbledon last month.
The upset came shortly after second seed Felix Auger-Aliassime was forced to withdraw before his own opener because of a back injury suffered during training on Monday. Auger-Aliassime was competing at his home event.
Griekspoor will next face the winner of a later match between Italian 30th seed Matteo Arnaldi and Hungary's Fabian Marozsan.
Zverev had made semi-final runs at the Australian Open, Indian Wells, Miami, Monte Carlo and Munich this season, and lost to Sinner in the Madrid final before capturing his first Grand Slam singles title at Roland Garros.
The loss of the tournament's two highest seeds within the space of a day leaves the draw considerably more open for the remaining players.
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