The U.S. Open got off to a promising start for the two biggest hopes in American men's tennis.

No. 4 seed Taylor Fritz defeated countryman and wild card Emilio Nava 7-5, 6-2, 6-3, while No. 6 seed Ben Shelton cruised past Peruvian wild card Ignacio Buse 6-3, 6-2, 6-4 on Sunday in New York.

This U.S. Open at Flushing Meadows is the 22nd anniversary of the last time an American man won one of the sport's four major tournaments, when Andy Roddick captured his only Grand Slam in 2003.

Fritz and Shelton have come close to ending that drought -- especially Fritz, who advanced to the final as the No. 12 seed last year before falling to World No. 1 Jannik Sinner of Italy.

On Sunday, Fritz hit 11 aces, won 78 percent of his first-service points (39 of 50) and saved all four break points he face

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