De Minaur had arrived in Melbourne on a high note emotionally in the wake of his breakthrough win, although his Sydney campaign proved physically taxing after he was forced to play his semi-final and final on the same day as a result of inclement weather late in the tournament.
Young Aussie tennis sensation Alex De Minaur has taken out his first ever ATP single's title on Saturday evening, knocking over Italian veteran Andreas Seppi in straight sets.
"Not to win at home, I'm sorry", Kvitova said.
The world No.29's court coverage was vast as always, regularly chasing down his Italian opponent's forehands and wearing the 34-year-old down over the 2hr 5min clash to make amends for last year's final loss to Daniil Medvedev.
De Minaur's triumph made him the youngest victor of the Sydney tournament since his mentor Lleyton Hewitt claimed it as a 19-year-old in 2001.
He staved off four break points to serve out the first set and completed the win by reeling off four games in succession.
"What happened was, he was disappointed that the Australian Open had decided early in the piece that the bottom half of the draw was going to be played on the first day before people knew who was going to be in the final of Sydney and Auckland".
'And to finally be able to take that step further and get my first win, it's something that's really special in front of friends and family and in the courts I grew up'.
The up-and-coming star's straight sets victory is the ideal warm-up two days out from his first-round Australian Open clash with Portugal's Pedro Sousa.
Untroubled by Simon throughout the clash, de Minaur laid the foundation by breaking his 34-year-old opponent's opening service game.
"I'm extremely proud of myself".
"I think they're punishing Aussies for playing deep in their home tournaments, and I think that should not be what they should be doing".
"But this is what I do the hard work for, to go out there and back it up".
'(But) I felt good out there. I feel like I'm playing great tennis.