The Serena William vs. Kim Clijsters US Open 2009 semi-final match ended dramatically after Serena Williams’ unacceptable outburst at a line judge.

Williams, 27, was serving at 5-6, 15-30 in the second set and faulted on her first serve. On the second serve, a line judge called a foot fault, making it a double-fault, which made the score 15-40, putting Kim Clijsters one point from victory.

Williams then turned to the lineswoman and began yelling and cursing.

The tennis player reportedly said: “I swear to God I’m… going to take this… ball and shove it down your… throat, you hear that? I swear to God.”

The judge claims the Grand Slam champ threatened to kill her during the incident.

“I didn’t threaten (her). I didn’t say…I don’t remember anymore, to be honest. I was in the moment. And, you know, everyone’s fighting for every point. It was a really crucial
point, 15-30, actually.”

The Tennis star, still angry over the loss, said she’s not about to say sorry either.

“An apology? From me? Well, how many people yell at linespeople?” Williams said.

John Mcenroe would be proud.