Thiem, Zverev eye first Grand Slam title in US Open final
Thiem joked after his straight-sets semi-final victory over Daniil Medvedev that if he loses, he might have to contact a multiple-Slam winner who lost four finals before winning his first, and then going on to win two more.
"If I win, I have my first. If not, I probably have to call Andy Murray (about) how it is with zero," the Austrian said ahead of the showdown inside Arthur Ashe Stadium.
Sunday's showpiece brings to a close a US Open unlike any other -- the coronavirus pandemic meant no fans have been allowed into Flushing Meadows and players have been tested for COVID-19 regularly.
This year's field at the Billie Jean King US National Tennis Center in New York was also depleted by the absence of Swiss legend Roger Federer and defending champion Rafael Nadal.
The tournament was also blown wide open by the disqualification of world number one and heavy favorite Novak Djokovic in the last 16 for hitting a line judge with the ball.
"It's the biggest goal and also the biggest dream I have in my tennis career since a few years," said Thiem, who lost in five sets to Djokovic in Melbourne this year.
"It was really tough to digest that loss in Australia as I was super close back then. I'm happy that I gave myself a pretty short time after that (for) another chance."
"I expect a very tough, very open match," said the world number three.
"His first serve is one of, if not, the best out there right now. It's so fast, so precise. That will be a key point. Try to put many balls back in play."
He is also bidding to become the first German to win the US Open since Boris Becker in 1989.
But he will be brimming with confidence after coming from two sets down for the first time in his career to beat Spain's Pablo Carreno Busta and reach the final.
He also has, arguably, less to lose.
"I have a chance. I'm looking forward to it. I'm just excited about it," said Zverev, the world number seven.