Australian teen tennis sensation Alex de Minaur was forced to win both a semi-final and a final on the same day to claim his first ATP title. "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.
The 34-year-old Seppi, playing in his first decider in more than three years, hasn't won a tournament since 2012.
De Minaur breezed to a 6-3 6-2 win in just over an hour and a half in sappingly hot conditions at Homebush.
"But I feel like I am hitting the ball well and certainly happy to come through in pretty straightforward fashion".
The talented young Australian player claimed the feat after losing two ATP finals previous year: the Sydney, and Washington opens, in addition to the 2018 Next Generation ATP Finals in the Italian city of Milan.
"I am very happy with my performance".
He also showed no sign of nerves, landing 73 per cent of his first serves and bouncing back immediately after being broken midway through the second set and then three times when his world No.37 opponent had mini breaks in the tiebreaker.
After conceding a break of serve in the opening game of the match, De Minaur levelled the opening set at 3-3.
Once again, De Minaur had to come from behind but he edged the tiebreak and celebrated his victory by falling flat on his back before kissing the court.
He will fly to Melbourne on Sunday ahead of his first-round match against Portugal's Pedro Sousa on Monday afternoon.
Nadal, who beat Australian wildcard James Duckworth in the opening round, will next face another of the local brigade, Matt Ebden, who downed German Jan-Lennard Struff 1-6, 6-4, 6-3, 6-4.
The Sydney-sider now has only five hours to recover before taking on Italian veteran Andreas Seppi in the final. It's been tough, because I have played a couple of finals and things haven't gone my way, ' de Minaur said.
The 23-year-old Sharma, ranked 232 in the world, came through qualifying last week to earn her spot in the main draw and she took advantage of Ho's struggles in the heat during the third set to advance to the second round.