Serena Williams has been slammed with a record-setting $82,500 fine after her foul-mouthed tirade against a judge during the U.S. Open last summer.

Williams lashed out at a lineswoman after a foot-fault call at the end of her semifinal loss to Kim Clijsters during an Open match in September. Williams already paid $10,000 for the profanity-laced rant, but after further investigation it was determined that she violated a “major offense” rule for “aggravated behavior” and the tennis champ has been hit with another fine and a two year probation sentence, Grand Slam administrator Bill Babcock said Monday.

Any more bad behavior from Serena, and she could be fined up to $175,000 and barred from the U.S. Open altogether.