Justin Timberlake and Jimmy Fallon didn’t include any Beyoncé in their latest History of Rap, but the pair still managed to dance to Queen Bey in another venue on Wednesday night.

The two best friends that anyone could have were at the U.S. Open in New York watching Roger Federer take on Richard Gasquet when Beyoncé’s hit “Single Ladies” played over the stadium’s speakers. Professionals always, Timberlake and Fallon knew what to do.

Timberlake completists will note that this isn’t the first time he has shown love for “Single Ladies.” In 2009, he participated in an SNL sketch built around the song with Beyoncé herself. (You remember.)

This article originally appeared on EW.com

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