Nick Kyrgios has been fined $10,000 (£7,573) for unsportsmanlike conduct after he quit his first-round match at the Shanghai Masters.
Kyrgios was booed as he left the court on Tuesday after he lost the first set on a tie-break against Steve Johnson.
He had earlier received a warning for smashing two balls out of court in frustration at a line call.
The Australian has also not been allowed to collect his $21,085 (£15,967) prize money.
Kyrgios was unable to collect his prize money because he failed to get signed off for a medical afterwards to prove he was unwell or hurt.
The 13th seed had already been given a point penalty for an audible obscenity when he was heard to say he would quit against Johnson if he lost the tie-break.
After his opponent served an ace on his first set point, Kyrgios walked over to shake hands.
Umpire Fergus Murphy asked the Australian if he needed medical help before the player walked off court to boos from spectators.
Fabio Fognini has also been fined $96,000 (£72,806) and given a suspended Grand Slam ban after verbally abusing an umpire at the US Open in September.
The Italian used insulting language towards Louise Engzell in his first-round defeat by Stefano Travaglia.
The 30-year-old world number 28 was initially fined $24,000 (£18,000) and suspended from the US Open.
If he does not commit another offence in the next two Grand Slam seasons, his punishment will be reduced.
The Grand Slam Board found Fognini committed a major offence of aggravated behaviour and conduct contrary to the integrity of the game.
In a statement it said: “Fognini accepts and will not appeal this decision and he has expressed remorse for his admitted misconduct. He has confidence that he will meet the conditions necessary to reduce his financial penalty and to lift his Grand Slam tournament suspensions in the future.”
Fognini’s fine will be halved and he will not be banned from the US Open and another Grand Slam if he does not commit another offence within the specified time period.