After two lightning-fast wins, No. 3-seeded Roger Federer looks to continue his impressive roll when the 2019 U.S. Open men's quarterfinals begin Tuesday from USTA Billie Jean King National Tennis Center in Flushing, N.Y. This is the 13th U.S. Open quarterfinal for Federer, who faces a player one decade his junior, 28-year-old Grigor Dimitrov. No. 5 Daniil Medvedev plays No. 23 Stan Wawrinka in the other Tuesday quarterfinal. Federer has won all seven previous matchups with Dimitrov, and bookmakers list him as a -1500 favorite (risk $1,500 to win $100) in the latest Federer vs. Dimitrov odds, with the Bulgarian getting +960 (risk $100 to win $960) as the underdog. In addition to the winner, you can also pick how many sets the match lasts, the exact score of the first set and whether Federer covers a 6.5-game spread, among many other wagering options. So before you make any 2019 U.S. Open picks or tennis predictions for the quarterfinals, see what renowned tennis handicapper Sean Calvert has to say. 

Calvert is red-hot this year. In March, he took down a huge score on Dominic Thiem winning Indian Wells at 80-1 and then he called Adrian Mannarino's Libema Open title at 25-1. At Wimbledon in July, Calvert told his followers to grab 3-1 odds on Novak Djokovic facing Federer in the final, adding Djokovic would win it all. The result: Djokovic and Federer cruised into the finals, with Djokovic winning the 4 hour, 57-minute final for his fifth Wimbledon crown. Anyone who followed Calvert's advice was handsomely rewarded.

Moreover, Calvert absolutely owns the U.S. Open. Since 2013, $100 players following his U.S. Open picks are up nearly $7,200. Now, he's locked in his picks for Federer vs. Dimitrov and Wawrinka vs. Medvedev. You can only see them at SportsLine.

Calvert knows Medvedev would be a solid favorite over Wawrinka if not for the Russian's various injuries. Medvedev is dealing with pain in his shoulder and adductor and is taking painkillers to get through the U.S. Open 2019. As a result, Wawrinka is a -124 favorite (risk $124 to win $100) in the latest Medvedev vs. Wawrinka odds for their quarterfinal match. 

"This match is all about what condition Medvedev will be in. For context, he's now played 47 sets in a month, with Wawrinka having played fewer than half that number," Calvert told SportsLine. 

Calvert is highly confident he has both of Tuesday's quarterfinal winners, and he's also targeting a pair of big plus-money picks in the Federer vs. Dimitrov showdown. He is wagering on many sets it lasts, and the exact score of the first set. Anyone who follows his advice could be in for a huge payout. Given Calvert's track record, you need to see his picks and analysis before locking in your 2019 U.S. Open quarterfinal picks. 

So who wins Federer-Dimitrov and Wawrinka-Medvedev? How long does Federer's match last? And what is the exact score of the first set? Visit SportsLine now to see Sean Calvert's detailed 2019 U.S. Open quarterfinal picks, all from the renowned tennis expert who's up over $7,000 on his U.S. Open picks.