Emma Raducanu picked up her best win by ranking since May, ousting No. 7 seed Marta Kostyuk in the opening round of the Mubadala Citi DC Open on Tuesday. She will face former World No. 1 Naomi Osaka in the second round.

Naomi Osaka has hit back at suggestions that Emma Raducanu followed her career trajectory as the Grand Slam champions prepare to face each other for the first time. The former world No. 1 and the Brit will do battle in the second round of the WTA 500 in Washington, and Osaka is looking forward to seeing their paths cross.

Emma Raducanu and Naomi Osaka have both won the US Open, but the Brit has explained why she has struggled to form a friendship with the Japanese star, and others on the tour