Nick Kyrgios has withdrawn from the Australian Open men's doubles to save himself for an all-out singles assault at Melbourne Park.

After cursing himself for his decision to play doubles in near-40-degree heat the day before his third-round win over Jo-Wilfried Tsonga, Kyrgios has opted out of continuing with fellow Australian Matt Reid.

The pair were scheduled to play Frenchmen Jeremy Chardy and Fabrice Martin in the second round on Saturday.

But the 17th seed will instead spare his energy for Sunday night's fourth-round showdown with world number three Grigor Dimitrov as he continues his bid to break Australia's 42-year men's title drought at the Open.

"Why the f*** am I playing doubles," he spouted towards his box during a change of ends.

"Hours in 50 degree heat ... really good management," he continued, sarcastically.

Taking a more considered tone after the win, Kyrgios said he "felt heavy" on court.

"My legs felt a little bit heavy. Yesterday was hot," he said.

"It took a lot out of me. I think the adrenaline kicked in the third and fourth sets [against Tsonga]. I had a couple bananas, started to feel better, got a bit of a second wind."

Nick Kyrgios (L) and Jo-Wilfried Tsonga embrace following their epic third-round match. ( AP: Ng Han Guan )

Kyrgios had been the only player left in the men's singles draw who was also contesting the doubles at Melbourne Park.

Kyrgios' Open workload 'a mistake'

Two-time men's champion Jim Courier, who is commentating with Channel Seven, had urged Kyrgios to ditch the doubles if he wanted to progress deeper into the singles draw.

"If Nick thinks he has a serious chance to win a major, he does need to stop playing doubles," Courier said on Friday.

"It is a mistake to play ... [and] get stuck in a 40 degree day like he did yesterday.

"It is not like they are going to win the doubles. All the players who think they have a serious chance to win majors in singles skip the doubles.

"They just do it because you can get caught out best of five and then you are backing that up."

Will Smith reacts during Nick Kyrgios's on-court interview on Rod Laver Arena. ( AP: Dita Alangkara )

Meanwhile, Will Smith, one of Kyrgios' favourite actors, was making his spectator debut at a major on Friday night, as he watched the Australian number one take on Tsonga.

Kyrgios, speaking on court following his victory, gave a nod to Smith, the actor he would pick to play the role of himself if there was a movie to be made.

"When I saw him out here I was so nervous. No joke," Kyrgios said.

"People think I'm cool, but I wanted him to think I was the coolest person ever."

ABC/AAP