Naomi Osaka pulled out of the Japan Open ahead of her quarter-final on Friday after the four-time Grand Slam champion failed to recover from a leg injury.

Naomi Osaka was leading 5-0 in the final set in the city of Osaka when she needed a medical timeout to receive treatment on her left leg.

Amanda Anisimova beat Naomi Osaka in three sets on Thursday to set up a US Open final against reigning champion Aryna Sabalenka.

Aryna Sabalenka beat Jessica Pegula in the 2024 final in New York but the undisputed women's number one is yet to add to her Grand Slam collection this year, losing in two finals.

Naomi Osaka powered past third seed Gauff 6-3, 6-2 in a highly-anticipated but lopsided fourth-round showdown of former US Open champions.

Jannik Sinner kept his US Open title defence on track Saturday as Iga Swiatek struggled through to the last 16 and home favourite Coco Gauff booked a blockbuster clash with Naomi Osaka.

Victoria Mboko conquered four-time Grand Slam champion Naomi Osaka 2-6, 6-4, 6-1, capping a fairytale run at the WTA Canadian Open with her first WTA title.

Canadian teenager Victoria Mboko conquered four-time Grand Slam champion Naomi Osaka 2-6, 6-4, 6-1 on Thursday, capping a fairytale run at the WTA Canadian Open with her first WTA title.

Four-time Grand Slam champion Naomi Osaka advanced to the semi-finals of the WTA Canadian Open with a comprhensive 6-2, 6-2 triumph over 10th seed Elina Svitolina.

Four-time Grand Slam champion Naomi Osaka advanced to the fourth round of the WTA Canadian Open on Friday by dominating 22nd-seeded Jelena Ostapenko of Latvia 6-2, 6-4.