Cotton Eye Joe is one of the most recognizable pieces of music in all of the history of music. The yodel-like disco song kicks in, and people immediately start dancing. It's a song that raises moods anywhere it's played - unless it's in the middle of a silent tennis match.

American star Jessica Pegula shocked the world No. 1 Iga Świątek in the semifinals of the Canadian Open in Montreal on Saturday when some sort of mis-press of a button.

Pegula was 4-3 up in the middle of a volley when Cotton Eye Joe came on, forcing the umpire into a let, while the song continued to play.

“I just thought it was funny,” Pegula said afterwards, according to Reuters.

“I’ve never had that happen, let alone with ‘Cotton-Eye Joe.’ I was like: ‘Is this really happening right now?’ Of all the songs. It was just like: ‘What is going on?’

It did stop a play that would've probably taken a point in the favor of Pegula.

“Yeah, it was a bummer because I hit a really good lob and she barely got it, and I had a really good play on the ball, and she was kind of out of position from the lob that I hit.”

The referee came over to the system and said "Re-play the point.

Świątek took a 4-2 lead in the deciding third set but Pegula won the last four games, and 16 of the last 19 points of the match, to seal victory.

Read more at CNN

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