Nick Kyrgios has been given a suspended 28-day ban and fined $25,000 (£16,200) by the Association of Tennis Professionals for making lewd remarks about Stan Wawrinka's girlfriend.
The incident took place during their Rogers Cup tie earlier this month.
An ATP review found the 20-year-old guilty of "aggravated behaviour".
The Australian had already received a $10,000 (£6,400) tournament fine for the "unacceptable comments" which were picked up by on-court microphones.
Although Kyrgios apologised after that punishment, Switzerland's French Open champion Wawrinka, 30, called for major action to be taken.
The fine and suspension will be withheld if over the next six months Kyrgios does not incur any fines for verbal or physical abuse, or accumulate fines totalling more than $5,000 (£3,200) for any other offences at ATP-sanctioned tournaments.