18:34 CET - Play is about to get underway now, with Elena Rybakina taking on Liudmila Samsonova in Toronto, and Tallon Griekspoor clashing with Daniel Merida Aguilar in Montreal.
Follow the action in Toronto and Montreal with Flashscore.
18:01 CET - Some big breaking news away from the action in Canada: World number one Jannik Sinner is set to miss the Cincinnati Open after he revealed that he is struggling with a knee injury. A concern for the Italian ahead of the US Open?
Read more about the news here.
16:30 CET - Welcome back to our live coverage of the Canadian Open, with the action rolling on in Montreal and Toronto. Both tournaments have seen a whole host of big names be dumped out, leaving the draws wide open for several players.
Play gets underway at 18:30 CET, with Australian Open champion Elena Rybakina up first at the women's tournament in Toronto. After Aryna Sabalenka's shock defeat last night, Rybakina has a huge chance to close the gap on the world number one ranking, but Liudmila Samsonova will want to foil her plans.
That is followed by American Coco Gauff, who clashes with exciting 19-year-old prospect Alina Korneeva following her stunning victory over fellow teen Iva Jovic in the last round.
A pair of fantastic clashes headline proceedings overnight, as home favourite Leylah Fernandez locks horns with four-time Grand Slam champion Naomi Osaka, before Belinda Bencic aims to halt the momentum of Alexandra Eala and her electric Filipino fanbase.
Over in Montreal, Tallon Griekspoor and Daniel Merida Aguilar will face off in a massive opportunity for both to reach the quarter-finals. Learner Tien then meets the conqueror of Taylor Fritz, Thiago Agustin Tirante.
The match of the day sees defending champion Ben Shelton go head-to-head with big-hitting Brazilian Joao Fonseca, in a contest that is sure to create a booming atmosphere.
Finally, Jakub Mensik faces the tricky challenge of another high-flying Dutchman, Botic van de Zandschulp.