KATIE BOULTER advanced to the quarter-finals of the Eastbourne International today by beating Jelena Ostapenko in straight sets.

Registering her first victory over a grand slam winner, the British number one held off a second-set fightback from Ostapenko to defeat the 2017 French Open champion 6-4 7-5.

It was another step forward for 27-year-old, who won her first WTA Tour title in Nottingham last year and then beat Emma Raducanu on her way to defending that crown this summer.