Alexander Zverev has admitted that the temper tantrum which saw him kicked out of a tournament in Mexico was "embarrassing" and the "biggest mistake" of his career.
The German was expelled from the Abierto Mexicano Telcel in Acapulco after a display of shocking behaviour at the end of a doubles match.
First there was an x-rated rant at chair umpire Alessandro Germani after the tennis star disagreed with a decision, which went against him and partner Marcelo Melo.