18:38 CET - Play is about to get underway in Canada, with Iga Swiatek vs Marta Kostyuk first up in Toronto, and Nuno Borges vs Luciano Darderi getting proceedings underway in Montreal.
Follow the action in Toronto and Montreal with Flashscore.
16:30 CET - Good afternoon and welcome to the coverage of the 1000 events taking place in Montreal and Toronto, with the round of 16 getting underway this evening from 18:30 CET. First up in Toronto is a heavyweight clash between world number 11 Marta Kostyuk and world number eight Iga Swiatek, before a meeting between Jessica Pegula and Diana Shnaider follows.
Kostyuk made light work of what should have been a tricky match against Madison Keys in the last round and will fancy her chances against Swiatek, who is playing her first tournament since her underwhelming third-round exit at Wimbledon.
In Montreal, meanwhile, the first match of the day sees Portugal's Nuno Borges come up against Italy's Luciano Darderi in a difficult-to-call clash. Borges has had to play an extra match to get this far but has been playing the better tennis, as Darderi was forced into a comeback win in the last round after losing the first set.
Overnight, the headline clash sees Jiri Lehecka against Rafael Jodar as two of the game's biggest prospects go head-to-head. Jodar has been in incredible form in 2026, and is coming off the back of outclassing Lorenzo Musetti in straight sets.
The two big names in overnight Toronto action are world number one Aryna Sabalenka, who takes on Ekaterina Alexandrova and last year's US Open finalist Amanda Anisimova, who faces Elina Svitolina in a heavyweight clash.
Follow all the action from Montreal and from Toronto with Flashscore!