Melbourne - Stanislas Wawrinka outclassed eighth seed Andy Roddick 6-3, 6-4, 6-4 on Sunday to set up an Australian Open quarter-final with close friend and fellow Swiss Roger Federer.
"Stan" - as Beijing Olympic gold medal partner Federer fondly calls him - out-aced American Roddick 24-9, as he ensured a first Grand Slam quarter-final between two Swiss men since the sport turned professional.
Wawrinka, seeded 19th, but playing tennis that Federer would have been proud of, caught Roddick cold under the Melbourne floodlights, breaking for 5-3 in the first set with a drilled backhand pass from which he never looked back.
Roddick was a step slower than his unshaven opponent, who had too many ideas and executed his shots superbly.
The contest ended after two hours and 22 minutes, when Roddick sliced a weary backhand into the net to leave no Americans remaining in either singles draw.