A fan was ejected from the US Open match between Alexander Zverev and Jannik Sinner on Tuesday after being accused by Zverev of using "the most famous Hitler phrase there is in this world".
The 12th seed, who comes from Germany, complained to the umpire after a comment from the spectator in the fourth set of his eventual win over Sinner.
While getting ready to serve, Zverev stopped and approached umpire James Keothavong, alleging that a man had uttered a famous phrase by the former dictator of his home country Germany.
After Zverev complained of the "unacceptable" and "unbelievable" remark, Keothavong asked the member of the crowd to identify himself, only to be met by silence from those behind his chair.
However, with the help of other spectators, security personnel soon picked out the man allegedly responsible and removed him from Arthur Ashe Stadium.
"A disparaging remark was directed towards Zverev. The fan was identified and escorted from the stadium," read a statement from the US Tennis Association.
Zverev went on to win a thrilling five-set contest 6-4 3-6 6-2 4-6 6-3 against the number six seed, setting up a quarter-final with defending champion Carlos Alcaraz.
