Ekaterina Alexandrova upended world No. 1 Aryna Sabalenka 7-6 (3), 4-6, 6-4 in the Canadian Open round of 16, marking her third career victory over a top-ranked player. The result headlined a day of upheaval in Toronto that saw Jessica Pegula and Mirra Andreeva also eliminated, leaving Elena Rybakina and Coco Gauff as the only remaining Top 5 seeds in the draw.
Iga Swiatek rallied past Marta Kostyuk 3-6, 6-1, 6-2 to reach the quarter-finals, while Diana Shnaider secured her first career win over Pegula with a 6-3, 6-3 victory. Elina Svitolina advanced with a 6-2, 6-4 win over Amanda Anisimova.
In earlier third-round action, Leylah Fernandez dismissed Andreeva 6-1, 6-4 and will next face Naomi Osaka, who beat Elise Mertens. Rybakina, Belinda Bencic, and Liudmila Samsonova also progressed with straight-set and three-set wins. On the men's side in Montreal, Arthur Fils defeated Cameron Norrie 6-2, 7-6 (10-8).