Comedian Jimmy Fallon and singer Justin Timberlake put on their own show Wednesday while professional tennis players Roger Federer and Richard Gasquet faced off at the US Open Tennis Championships.

When the camera focuses on Fallon and Timberlake during a changeover in the match, Fallon jumps to his feet to perform the dance from Beyonce's "Single Ladies" music video. Timberlake joins in, and both entertainers dance while holding back laughter.

According to The Cauldron, the dance was one of the highlights of the night.

Here's Jimmy Fallon & Justin Timberlake dancing in the stands to Beyonce on the arena screen pic.twitter.com/c1uGWRkEJZ

— The Cauldron (@TheCauldron) September 10, 2015

Alex is an intern with Deseret Digital Media.

Email: ajohnson@deseretdigital.com

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Twitter: @axelrad_

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