Kyrgios reveals kind text from under-fire Tomic

Nick Kyrgios has revealed a kind text from Bernard Tomic after he capped a brilliant day for the Aussie men on the opening day of the Australian Open.

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

After the impressive victory, he told reporters he'd received the text before the match.

"He sent me a message, he just said good luck and I'll see you soon," Kyrgios said.

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"I haven't really been talking to Bernard much, I don't know what his plan is or what he's going to do.

"I just hope for the best for him I guess."

It was a nice gesture from Tomic who clearly has bigger things on his plate that supporting his compatriots at the Open.

The controversial 25-year-old recently failed to qualify for the Australian Open, before telling reporters he's going home to 'count his millions'.

That comment drew widespread condemnation from tennis fans and professionals alike, but it hasn't stopped Tomic from supporting his compatriots.

Meanwhile, Kyrgios will now play Viktor Troicki on Wednesday after the Serbian denied Australian wildcard Alex Bolt in five sets on day one of the Open.

He was irrepressible on serve, railing aces that topped out at 217 kilometres an hour.

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."

Compatriots Millman and Ebden scored upset wins over their more-fancied opponents, with Millman beating Borna Coric and Ebden downing John Isner.

Millman overcame a volatile Coric 7-5, 6-4, 6-1, with the Croatian destroying a racquet and involved in a running battle with the chair umpire.

Coric, 21, is seen as a dominant player of the future, having finished in the year-end top 50 for three straight seasons.

But the 28-year-old Queenslander showed him up on show court three, racing through the final set in half an hour to return to the second round as he did in 2016.

Ebden put his hand up for Davis Cup duties after posting the biggest win of his grand slam career, upsetting the 16th seed 6-4 3-6 6-3 6-3.

Australia's No.2-ranked men's player behind Kyrgios, Ebden had never previously beaten a top-20 player at a grand slam.

However it wasn't all good news for the Aussies, with local wildcards Jason Kubler and Bolt both coming up just short in their quests for maiden major victories.

Eight long years after his last main-draw appearance at Melbourne Park, Kubler went down to Spanish 10th seed Pablo Carreno Busta, who had enjoyed a breakthrough 2017 campaign.

With AAP