Budapest, Hungary, 27 April 2018 | AAP

Australia’s John Millman has sent defending champion Lucas Pouille crashing out of the Hungarian Open to march into the quarterfinals in Budapest.

The Queenslander prevailed 6-3 6-4 against the world No.14 for the biggest win of his career by ranking position.

TOP SEED OUSTED!@johnhmillman def. @la_pouille 63 64 in the 2nd round @ATPWorldTour @TennisAustralia pic.twitter.com/mJUVi0MfM0

— HUNtennis (@HUNgarianTENNIS) April 26, 2018

Millman, who sits 80 places below the Frenchman, needed just 73 minutes to chalk up the victory on clay and set up up a quarterfinal against Germany’s Yannick Maden.

“I’m really happy with how I played, how I stuck with it mentally… I took my chances well today,” Millman said.

“I’ve come close a few times of late but couldn’t quite get through, so a really good result, especially considering it’s my first tournament on clay in a long time.”

Aussie @JohnHMillman beats World No. 14 and defending champion Lucas Pouille 6-3, 6-4 for biggest win of career in #Gazprom #HungarianOpen 2R. Andreas Seppi is only quarter-finalist in Budapest to have won an @ATPWorldTour title (2011 Eastbourne, 2012 Belgrade, 2012 Moscow).

— ATP Media Info (@ATPMediaInfo) April 26, 2018

It’s the third ATP quarterfinal of the Queenslander’s career; he reached his first at Montpellier in 2016 and advanced to the semifinals in Winston-Salem the same year.

Maden, his next opponent, overcame compatriot Maximilian Marterer 6-1 6-3.

Fourth-seeded Canadian Denis Shapovalov also suffered an early exit as the 19-year-old was beaten 6-2 6-4 by Georgia’s Nikoloz Basilashvili.

Andreas Seppi powered past Russia’s Mikhail Youzhny 6-1 6-2 to reach the last eight.

More pics of @johnhmillman vs @la_pouille : here: https://t.co/cGSOudrqtb @ATPWorldTour #budapest @TennisAustralia pic.twitter.com/mGTnoJ7cnG

— HUNtennis (@HUNgarianTENNIS) April 26, 2018