US Open semi-finalist Frances Tiafoe aimed a torrent of expletives at the chair umpire after losing his third-round match at the Shanghai Masters. Tiafoe targeted Jimmy Pinoargote in a minute-long tirade after his 7-5, 5-7, 6-7 defeat against unseeded Roman Safiullin. The American was angered after being docked his first serve for a time violation at 5-5 in the decisive tiebreaker. Footage courtesy of ATP Tour
