'It was a tough one, ' Hewitt said of rolling the dice on the pairing and in particular playing de Minaur after his singles loss.
For de Minaur, that meant going nearly directly back on court for Australia.
Shapovalov, who beat Tsitsipas in his opening match, returned with team mate Felix Auger-Aliassime to win the deciding doubles rubber against Kevin Krawietz and Andreas Mies 6-3 7-6 (4), earning Canada a 2-1 win in the tie to keep them in the hunt for the quarter-finals. "The adrenaline has been exhausted and I am exhausted after that game".
His hunch paid off. Hewitt, who played doubles with de Minaur at the Brisbane International past year, a week before de Minaur won his first singles title at the elite level by claiming the trophy in Sydney, said the high-pressure moment experience of his two singles players was an advantage.
"Today was probably one of the best moments of my career, definitely". He then completed a three-set triumph over world number 6 and Greece's darling Stefanos Tsitsipas who just two months ago won the ATP World Tour Finals.
His win ensured Australia will go to the knockouts having won all their ties in the $15 million ATP Cup, which features 24 nations competing in Perth, Brisbane and Sydney over 10 days. "I knew that if I was going to step out on the doubles court, then I was going to make sure that I was going to be fired up, ready to go, and full of energy", De Minaur said. Just point us at the screen and bring us a defibrillator.
After the match, Kyrgios said in a TV interview he would celebrate with red wine.
Brief weather break for Australian bushfires
Fire authorities fear that two blazes in the states of New South Wales and Victoria could connect to create a mega blaze. More than a thousand people were evacuated from the Victoria state town by two naval ships on Friday.
The underdog Brits came within inches of the upset.
The Aussie rubbed salt into the wounds of Great Britain's Jamie Murray after a missed match-point. "We hung in and we did well". "The whole team was - we genuinely care for each other, and (Guccione, Peers and John Millman) were genuinely just so ecstatic to get through". "Yes, we lost. I mean, that was it".
Russian Federation also reached the semi-finals after singles victories for Karen Khachanov and Daniil Medvedev against Argentina.
'That's about as good as I've got really and I only got through by the skin of my teeth, admitted Evans, ranked 42. "It's really great. We played great with Karen".
Nimble Australia has become a model of concentration and focus in Cup ATP, thrive in a team environment.
Spain can meet Australia if they overcome Belgium this morning as Nadal takes on David Goffin.
In the first match on Friday, Novak Djokovic will test Denis Shapovalov and Dusan Lajovic faces Felix Auger-Aliassime.