Stan Wawrinka remains on course to win back-to-back Grand Slam titles after beating Jo-Wilfried Tsonga to reach the semi-finals of the Australian Open.
The Swiss fourth seed, who claimed his third major title at last year's US Open, won 7-6 (7-2) 6-4 6-2 to set up a potential match with Roger Federer.
Four-time champion Federer takes on unseeded German Mischa Zverev in the second quarter-final at 08:00 GMT.
Wawrinka won his first Grand Slam title at the Australian Open in 2014.
The 31-year-old has since added victories at the French Open in 2015 and the US Open last September, and is rated by many as the favourite in Melbourne following surprise defeats for Andy Murray and Novak Djokovic.