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.

• Frances Tiafoe could face heavy fine after expletive-filled rant at Shanghai Masters

Footage courtesy of ATP Tour