Belgium's Elise Mertens kept up her spectacular form to thrash Ukrainian fourth seed Elina Svitolina and reach the Australian Open semi-finals.
Mertens, ranked 37th, won 6-4 6-0 in 73 minutes on Rod Laver Arena to reach the last four on her main-draw debut in Melbourne.
It is the first time the 22-year-old has beaten a top-five player.
Mertens will face Danish second seed Caroline Wozniacki or Spain's Carla Suarez Navarro in the last four.
She will head into the semi-final on a 10-match winning streak after defending her Hobart title on the eve of the Australian Open.