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Nick Kyrgios has scored an emotion-charged comeback win over world No.1 Daniil Medvedev to underline his US Open title credentials and book an intriguing, first-time all-Australian showdown with Alex de Minaur.

The Wimbledon runner-up once again made a mockery of the rankings to wear down Medvedev 6-7 (2-7) 6-4 6-2 in a sapping second-round encounter in Montreal played in searing heat and humidity.

Both in-form stars were coming off title wins last week, with Kyrgios completing an historic singles-double double in Washington and Medvedev reigning in Los Cabos, Mexico.

After losing the opening set in a tiebreaker, Kyrgios dug deep and turned the match around with one incredible backhand passing shot to break Medvedev in the sixth game of the deciding set.

He broke the dispirited Russian for a second straight service game before closing out the match to love after exactly two hours.

The stirring victory was Kyrgios's third from four meetings with Medvedev, his 14th win from 15 matches and second ever over a world No.1 - eight years after conquering Rafael Nadal on his Wimbledon debut as a teenager.

"I'm not the type of player who goes into these matches looking at rankings or anything like that," Kyrgios said after dedicating the win to ailing mother Nill.

"It's just who I'm playing and what kind of ball they're giving me and today I had a very clean objective of how I was going to play - a lot of serve and volley, a lot of aggressive play from the back - and I executed better than he did on the day.

"That's all it came down to ... so hopefully I can keep this rolling.

Unbeaten on the American hardcourt swing, Kyrgios's only defeat in the past six weeks came against Novak Djokovic in the Wimbledon decider.

Djokovic won't be in New York for the season's final grand slam starting on August 29, leaving Kyrgios as one the biggest threats to reigning champion Medvedev.

"Look, a grand slam is much, much different to any other tournament," Kyrgios said after ending Medvedev's title defence in Canada.

"If I was in this position of a grand slam, you've still got to win another set and that's not easy at all. He's a machine.

"He's the best player in the world for a reason and at a grand slam he's a totally different beast."

Nevertheless, Kyrgios's US Open hopes continue to skyrocket and the 27-year-old's latest triumph all but secured the Canberran an all-important seeding for Flushing Meadows.

"Look, I feel confident in my body and my mentality going in to the US Open but at the same time there's so much time between then and now," Kyrgios said.

"I've got to focus on this event and then Cincinnati. There's so many things I've got to look forward to. I'm not even going to think about the US Open right now.

"I need to take care of my body."

Kyrgios's mother is in hospital with failing kidneys, prompting the ACT ace to write "be strong, ma" on the camera after his win.

De Minaur, himself in terrific touch after winning his sixth career title two weeks ago in Atlanta, set up a first-time meeting with Kyrgios with a 7-6 (7-4) 7-5 second-round win over Bulgarian Grigor Dimitrov, the 15th seed.

Kyrgios and de Minaur had been poised to clash in the Wimbledon quarter-finals before de Minaur let slip a two-sets-to-love advantage over Chile's Cristian Garin in the fourth round.

Kyrgios or de Minaur - who play at 5am Friday AEST - will face either Polish eighth seed Hubert Hurkacz or Spanish veteran Albert Ramos-Vinolas in the quarter-finals.

© AAP 2022

Disney has surpassed streaming rival Netflix in the total number of subscribers for the first time, the company's Q3 reports show.

Having gained 14.4 million subscribers to its Disney+ the franchise now maintains 221 million total subscriptions across its streaming offerings.

That compares to Netlfix's reported 220.67 million total global subscribers.

It is the first time any competitor has passed the streaming giant on the number of total subscribers.

"We had an excellent quarter, with our world-class creative and business teams powering outstanding performance at our domestic theme parks, big increases in live-sports viewership, and significant subscriber growth at our streaming services," Disney chief executive Bob Chapek said.

"With 14.4 million Disney+ subscribers added in the fiscal third quarter, we now have 221 million total subscriptions across our streaming offerings."

© PAA 2022

Speeding down his driveway and doing doughnuts in his off-road buggy during a Christmas brunch, Christopher Browne's aim was to scare his sister.

But during one last stunt in a paddock beside his Barnawartha North home in Victoria's northeast, the all terrain vehicle flipped.

His two-year-old son Lincoln was thrown from Browne's lap and fatally crushed by the rolling vehicle.

Browne, now 33, had overridden seatbelt safety features on the buggy and both he and Lincoln were unrestrained. It was also overloaded, with three people on board instead of two.

"Understandably you have suffered deep guilt and sadness which has manifested itself in severe symptoms of PTSD," County Court Judge Michael Cahill said on Thursday.

Ordinarily it's offending that would result in a prison sentence, he said.

But Browne avoided a jail term and was instead placed on a three-year community corrections order with a condition that he complete 250 hours of unpaid community work.

The builder, who owns his own business and helps to operate three others, has also been disqualified from driving for 18 months.

Browne's doctor wrote to the court asking for compassion.

"Mr Browne has already suffered enough in December 2020 as a result of the death of his child and has been genuine in persevering with this mental health recovery for the sake of others who rely on him," the doctor said.

A friend described Browne as a shadow of his former self, while his father-in-law said Browne would carry the demons of the accident for life.

Browne has built a playground next to his house in memory of his son.

He was supported in court by his wife, who Judge Cahill described as staunchly loyal, having supported Browne at every step of the court proceedings.

The couple had stillborn twin daughters before Lincoln's birth and also have another child.

A psychologist who treated Browne said the only thing keeping him going was his sense of responsibility to look after his wife and their younger child.

Judge Cahill said Browne admitted to police he had become complacent with safety when using the buggy and had been trying to scare his sister on the ride.

Browne did several doughnuts, sped up and down the driveway and returned to the paddock for a final burnout when the buggy tipped.

Judge Cahill said Browne's offending was objectively serious - both he and his son were unrestrained.

By sitting on top of the clipped-in seatbelt, Browne had overridden a safety interlock - which would have limited the speed to 25km/h.

He pleaded guilty to dangerous driving causing death and conduct endangering persons.

Prosecutors had called for a prison sentence.

In a similar case another father was sentenced to more than three years behind bars and an appeal on the grounds that it was manifestly excessive was refused, they argued.

© AAP 2022