De Minaur claimed his first ATP title on Saturday night at the Sydney International beating Italian Andrea Seppi 7-5, 7-6.
The 34-year-old Italian's efforts paid off when he broke De Minaur to go 4-3 up but a poor service game allowed the teenager to break straight back and the set headed into a tiebreak.
In doing so, he became the youngest victor of the Sydney International since Lleyton Hewitt in 2001, and the first home talent to claim the prize since Bernard Tomic in 2013.
The last Australian man to make the men's singles final was Lleyton Hewitt, who lost to Marat Safin in 2005, but De Minaur felt there was no added pressure on him to end the long drought.
The world No.29's court coverage was enormous as always, regularly chasing down his Italian opponent's forehands and wearing the veteran down over the 2hr 5min clash. "What's more annoying is me having to play Monday at the Australian Open and not getting helped out as a fellow Aussie at your home slam", said the 27th seed.
It also took his daily court time to more than three-and-a-half hours, two days out from his first-round Australian Open clash with Portugal's Pedro Sousa.
Beaten in the Sydney International final for the second year in a row, losing on Saturday night in a third-set tiebreaker to world No.8 Petra Kvitova, Barty has still had a more distinguished run this summer.
Kumkhum had started in a blaze to break Barty early for a 2-0, but the Australian refused to panic and instead reeled out seven straight games, including four breaks of serve, to win the opening set and lead 1-0 early in the second. "It's all tough. But I'm very happy that I was able to get the win", he added.
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I can only go off of my own experiences", Smart said. "I got my firearm out and stood by the door until the police arrived". But they were still concerned he might be after her. "Jennifer babysat for her all the time in her daycare that she ran".
Kvitova's experience finally paid off as she powered home in the tiebreaker to claim her 26th WTA tour victory.
In his second straight Sydney final, the fifth seed won 75 percent of first-serve points to improve on his runner-up finish to Russian Daniil Medvedev past year.
"It's hard to put in words at the moment, but, it's been a hell of a week".
"I left everything out there".
"I have had probably one of the best weeks of my career".
"In terms of the women's Plisokova is playing really well and Angie Kerber had a really good week at the Hopman Cup as well. Yes, it's a bitter pill to swallow tonight, but we move on".
Kvitova prevailed despite her serve being broken six times in the match but she finished with 31 winners to Barty's 23.