American tennis star Frances Tiafoe has apologized for his behavior at the ATP Shanghai Masters after he berated the chair umpire after losing in the third round. Tiafoe was angry that he had been given a pair of time violations,

Tennis fans are not discussing the stellar play at this year's ATP Shanghai Masters. While there have been some spectacular shots, the headlines have largely been devoted to top-ranked players such as Novak Djokovic, Stefanos Tsitsipas and Frances Tiafoe's confrontations with chair umpires.

U.S. Open semifinalist Frances Tiafoe has aimed a torrent of expletives at the chair umpire after losing a match at the Shanghai Masters