Emma Raducanu began her build-up towards next month’s US Open with an impressive straight-sets win over seventh seed Marta Kostyuk at the Mubadala DC Citi Open in Washington.
Playing her first singles match since stretching world number one Aryna Sabalenka in the third round of Wimbledon, Raducanu held off the Ukrainian world number 27 to pull through a gruelling encounter 7-6 (4) 6-4.
