American unhappy with time violation decisionTiafoe faces penalties for verbal abuse of officialUS Open semi-finalist Frances Tiafoe aimed a torrent of expletives at the chair umpire after losing his third-round match at the Shanghai Masters on Tuesday.Tiafoe targeted umpire Jimmy Pinoargote in a minute-long tirade after his 5-7, 7-5, 7-6 loss 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. Continue reading...