Kyrgios's hilarious freudian slip about girlfriend

Nick Kyrgios had the crowd in hysterics after his first round victory with a cheeky one-liner about girlfriend Ajla Tomljanovic.

Kyrgios maintained his perfect record in the first round of the Australian Open, making short work of Brazilian opponent Rogerio Dutra Silva on Monday night.

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Australia's top hope of ending a 40-year wait for a home-grown winner at Melbourne Park eased into the second round with a 6-1 6-2 6-4 win over the world No.100, helped by 16 aces.

And Kyrgios had a hilarious freudian slip in his post-match interview, leaving the Hisense Arena crowd cracking up.

The young Aussie was asked about how he spent the week leading into the Australian Open, replying: "I had my girlfriend in my room so it's been fun."

Whether or not Kyrgios meant to say what he did remains to be seen, but fans certainly saw the funny side of it.

Kyrgios has been dating fellow tennis player Tomljanovic for the last two years, with the lovebirds regularly spotted together at tournaments.

Without strapping on his troubled knee, the 22-year-old played with freedom - and crucially for his injury issues, got off court in just 95 minutes.

Kyrgios' four matches on the way to the Brisbane International title means he's played more competitive tennis than most of his Open rivals.

Having backed off the training since arriving at Melbourne Park, the quick dismissal of Dutra Silva allows his trainers to maintain control of his workload in the early stages of the fortnight-long event.

In the first two sets, Kyrgios showed all the hallmarks of a maturing player, as he has pledged to become.

He cruised through the opening set in under half an hour, slamming seven aces and making just seven unforced errors.

Dutra Silva snapped Kyrgios' seven-game winning streak early in the second set, holding to make the score 2-1, but was only just clinging on.

The 23-minute second set was even quicker, with Kyrgios making just six errors of any kind.

The 33-year-old found his serving rhythm in the third set but came unstuck in the seventh game, dropping to 0-40 on serve and handing a break to Kyrgios.

Smelling blood, the Canberran closed the match out on his next service match, before confessing anxiety before taking the court.

"I was very nervous coming our here for the first match," he said.

"I don't think I played as well as I did in Brisbane.

"I knew today I was facing a tough competitor. I'm just happy to be here, riding confidence from Brisbane ... and playing well."

with AAP