Former world No. 1 Naomi Osaka blasted her way into the quarterfinals of the 's-Hertogenbosch grass-court tournament on Wednesday with a rapid-fire straight sets victory as she tunes up for Wimbledon.

The four-time Grand Slam winner dispatched home favorite Suzan Lamens 6-2, 6-2 in less than an hour, with her powerful service and groundstrokes proving too much for the Dutchwoman.

Osaka, now ranked 125th in the world, will next face Canada's Bianca Andreescu, who came through her match against sixth-seed Yuan Yue from China in straight sets.