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The big-serving Canadian, a semi-finalist at Melbourne Park last year, was clinical on a sun-bathed Margaret Court Arena, firing 21 aces and breaking the serve-volleyer from Luxembourg once in each of the first two sets.

Australian Open men
Thiem sets up meeting with Goffin after simple win over Paire
21/01/2017 AT 08:08

Left-hander Muller, who celebrated his maiden ATP title in Sydney earlier this month in his 17th year as a professional, saved a match point in the decisive tiebreak but fired a forehand into the tramlines to bow out.

Highlights: Raonic through against Muller as draw opens up

Raonic will next play French 25th seed Gilles Simon for a place in the fourth round.

Meanwhile, David Ferrer survived the scare of the losing the first set to Ernesto Escobedo to set up a meeting with compatriot Roberto Bautista Agut in the third round.

Highlights: David Ferrer v Ernesto Escobedo

The 34-year-old went down 6-2 in the opening gambit but hit back to take the next three 6-4 6-4 6-2.

Australian Open men
Murray powers past Querrey into fourth round
20/01/2017 AT 06:42
Australian Open men
Wawrinka edges Troicki to reach fourth round
20/01/2017 AT 06:42