US Open: Injured Shelton retires, Tiafoe stunned in early exit
New York, Aug 30 (IANS) Sixth seed Ben Shelton was forced to retire from his U.S. Open third-round clash against France’s Adrian Mannarino on Friday, shortly before 17th seed Frances Tiafoe also bowed out - delivering a major blow to American hopes of ending a 22-year drought for a men’s Grand Slam title.