Novak Djokovic and Juan Martin del Potro hook up for the 19th time in Sunday's 2018 US Open final. The match begins at 4 p.m. ET from Billie Jean King National Tennis Center in New York. Djokovic, a two-time U.S. Open champ, leads the series 14-4, but Delpo, the 2009 U.S. Open champion, is playing transcendent tennis and has dropped just one set in this tournament. Del Potro was crushing Rafael Nadal in Friday's semis, two sets to none, when the world No. 1 retired due to knee pain. Sportsbooks list Djokovic as the -250 favorite (risk $250 to win $100), with Delpo getting +200 (risk $100 to win $200) as the underdog.

Before you pick the final, you have to hear what international tennis expert Sean Calvert says. Calvert destroyed the books in the US Open quarters and semis, including saying Djokovic would dominate Kei Nishikori. Calvert recommended betting Nishikori Under 15.5 games (he won nine); betting the first set to go Under 9.5 games (it lasted nine); and betting the match would have zero tie-breaks (there were none). Anyone who's following Calvert this tournament is way, way up.

It's no surprise, as Calvert has been releasing documented, profitable bets for six straight years now. And he owns this event. In 2013, he nailed 25 of 28 U.S. Open bets -- an insane 89.3 percent win rate that netted his followers nearly $2,700. The next year, his followers won $1,700. In 2015, Calvert called Flavia Pennetta's shocking women's title and it paid off at 499-1. At this year's Wimbledon, Calvert again made history by predicting Roger Federer's stunning quarterfinal loss.

Don't forget Calvert cashed in huge on John Isner at 100-1 to win the 2018 Miami Open.

Now, Calvert has broken down the 2018 U.S. Open men's final and locked in his bets. We can tell you Calvert is expecting some magical tennis Sunday, noting, "Neither man has really been seriously tested (unless you count by the conditions) in this tournament so far, so they should each have enough gas in the tank to make this a very entertaining final."

Calvert is highly confident he has Sunday's 2018 U.S. Open men's final winner, and he's even throwing in three prop bet recommendations.

Who wins the U.S. Open final? And in how many sets? Visit SportsLine now to see Sean Calvert's picks, all from the acclaimed expert who just destroyed sportsbooks with his quarterfinal and semifinal picks.