Rafael Nadal of Spain plays a forehand during his singles match against Ricardas Berankis of Lithuania at Summer Set tennis tournament ahead of the Australian Open in Melbourne, Australia on Jan 6, 2022. (HAMISH BLAIR / AP)

MELBOURNE - Rafa Nadal stepped up his preparations for this month's Australian Open with a 6-2 7-5 win over Lithuanian qualifier Ricardas Berankis in the second round of the Melbourne Summer Set ATP 250 tournament on Thursday.

Playing in his first competitive singles match on the ATP Tour since Aug 5, the 20-times Grand Slam champion showed no signs of rust early on at Rod Laver Arena as he broke for a 3-1 lead in the opening set with a blistering forehand.

I'm super happy to be back playing competitively and it is difficult to imagine a better place than Australia to return ... It's only my first match after a while and I have been going through difficult moments in the last year-and-a-half. But in general terms I'm happy and it's important to start with a win.

Rafa Nadal, Spanish professional tennis player

The world number six, who brought a premature end to his 2021 season due to a left foot injury, moved with ease on court as he wrapped up the first set in 31 minutes.

He was not quite so fluid in the second set, however, with the players trading early breaks.

Nadal went ahead 5-2 but Berankis clawed his way back into the contest to level at 5-5 before the Spaniard switched gears again to secure the victory.

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"I'm super happy to be back playing competitively and it is difficult to imagine a better place than Australia to return," said Nadal.

"It's only my first match after a while and I have been going through difficult moments in the last year-and-a-half. But in general terms I'm happy and it's important to start with a win."

Nadal, who pulled out of Wimbledon, the Tokyo Olympics and the US Open in 2021, only returned to action last month in an Abu Dhabi exhibition tournament where he lost to Andy Murray.

Rafael Nadal of Spain hits a return during his men's singles match against Ricardas Berankis of Lituania at the Melbourne Summer Set tennis tournament in Melbourne on Jan 6, 2022. (MIKE FREY / AFP)

The 35-year-old, who tested positive for COVID-19 last month, is also competing in doubles at Melbourne and will play again on Thursday partnering Jaume Munar.

In the women's Melbourne Summer Set 1 tournament, twice Grand Slam champion Simona Halep marched into the quarter-finals with a 6-2 6-1 win over fellow Romanian Elena-Gabriela Ruse while Andrea Petkovic and Ana Konjuh also advanced.

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Japanese top seed Naomi Osaka is in action later on Thursday against Maryna Zanevska of Belgium.

Daria Kasatkina, seeded third in the Melbourne Summer Set 2 tournament, overcame American Madison Keys 7-6(4) 2-6 6-3 before Amanda Anisimova made short work of fifth seed Sorana Cirstea.