Eighth-seeded Stefanos Tsitsipas crashed out of the US Open against Russian Andrey Rublev on Tuesday having unleashed a tirade against the chair umpire, who he called a “weirdo.”

World No.43 Rublev, who two weeks ago earned the biggest win of his career when he beat Roger Federer in the third round at Cincinnati, attacked Tsitsipas with a barrage of forehands and broke his opponent five times in the 6-4 6-7 (7-5) 7-6 (9-7) 7-5 win.

But Tsitsipas, whose best showing at a grand slam came this year in Australia where he reached the semi-finals, received a coaching warning for his father’s behaviour early in the third set at Louis Armstrong Stadium.

The Greek, one game after receiving a time violation in the fourth set, then became furious when the umpire would not allow him extra time on the changeover to change his bandana.

An angry Tsitsipas told the umpire: “You’re a weirdo, you’re all weirdos.”

He also asked to be given a point penalty, which the umpire granted at 3-4 before Rublev went on to hold to love.

Tsitsipas has now endured consecutive first-round exits at grand slams following his early departure from Wimbledon.

Up next for Rublev, who reached the US open quarter-finals in 2017, will be either Frenchman Gilles Simon or American wildcard Bjorn Fratangelo.