Nick Kyrgios has been fined for an "insulting remark" he made to Stanislas Wawrinka during their Rogers Cup match in Montreal.
On-court microphones apparently picked up Kyrgios, 20, making a lewd suggestion about Wawrinka's girlfriend.
French Open champion Wawrinka, 30, said it was "unacceptable" and called for the Australian to be punished.
The Association of Tennis Professionals (ATP) did not disclose how much Kyrgios had been fined.
More to follow.
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