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.

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

Emma Raducanu has admitted she doesn’t have many friends on the WTA Tour ahead of her clash with Naomi Osaka at the Washington Open. The British tennis star is out in the United States to prepare for the US Open – the final major event of the year – which gets underway next month.

Emma Raducanu got her US Open swing off to the perfect start with an impressive straight sets victory against Marta Kostyuk. The 22-year-old beat number seven seed at the Citi Open 7-6, 6-4 to