Emma Raducanu reclaimed the British No 1 title with a powerful straight-sets win over four-time major winner Naomi Osaka at the Mubadala Citi DC Open.

Emma Raducanu beat four-times Grand Slam champion Naomi Osaka 6-4 6-2 in their first career meeting to reach the quarter-finals of the Washington Open on Thursday.

Emma Raducanu proves too strong for Naomi Osaka in Washington - The 22-year-old eased into the Citi Open quarter-finals with a 6-4 6-2 victory.