Rafael Nadal has zoomed into the Third Round at the Australian Open after another commanding display saw him defeating Argentina's Leonardo Mayer in straight sets.

The 2009 champion again looked untroubled on Wednesday by his recent knee issues, claiming a 6-3 6-4 7-6 (7-4) victory in two hours and 38 minutes on Rod Laver Arena.

The World No.1 will now face Bosnian No.28 seed Damir Dzumhur - who earlier edged out local favourite John Millman - in Friday's third round.

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After dropping just three games in his first-round defeat of Dominican Estrella Burgos, Nadal was forced to dig deeper in his fifth career meeting with 30-year-old Mayer.

The 16-time grand slam winner had his serve broken at 5-4 and was forced to a tiebreaker in a third set which lasted 69 minutes.

"It's an important victory for me," Nadal said after his latest win.

"He was a tough opponent. Leonardo is a player with big potential - he hits the ball so strong. I had to hit some great shots in the tiebreak.

"Happy to be in the third round of course .... second victory in a row, it's very important news for me."

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