Former British number one Laura Robson claimed her first win in almost two years at a Challenger event in Canada.

Robson, 21, beat 17-year-old Japanese Naomi Osaka 7-6 (7-5) 6-7 (5-7) 6-3 at the Granby National Bank Challenger, a level below the WTA Tour.

The former world number 27 has fallen to 913th in the rankings after 18 months out with a wrist injury.

Robson lost in the first round at Eastbourne in June and Wimbledon in July on her comeback.

She was beaten 6-0 6-1 by Daria Gavrilova at Eastbourne – her first match since the Australian Open in January 2014 – and 6-4 6-4 by Evgeniya Rodina after being awarded a wildcard entry to Wimbledon.

She will be entered into the main draw of the US Open in New York, starting on 31 August, thanks to her protected ranking.

Robson’s most recent victory came at the Guangzhou Open in China in September 2013.