Fabio Fognini has been kicked out of the US Open doubles and faces a possible permanent ban from all Grand Slam events, after vulgarly insulting the chair umpire during his first-round loss in singles.
If the Grand Slam Board determines Fognini committed a "major offence", the Italian also could be fined up to $US250,000 ($NZ349,400) for violating the code of conduct.
Fognini, who was seeded 22nd in singles, was fined a total of $US24,000 ($NZ33,540) by the US Open - nearly half of his singles prize money - for unsportsmanlike conduct during his 6-4 7-6 (10-8) 3-6 6-0 loss to Stefano Travaglia on Wednesday.
Fognini was cited by the tournament for three violations, carrying fines of $US15,000, $US5000 and $US4000. He reportedly called Swedish chair umpire Louise Engzell a "whore" and a "c***sucker".
Fognini's suspension went into effect immediately, so he was withdrawn from the doubles tournament, where he and countryman Simone Bolelli had advanced to the third round.