Here's Novak Djokovic & Gerard Butler Screaming 'This Is Sparta' After U.S. Open Win

Novak Djokovic won his 14th career grand slam on Sunday when he beat Juan Martin Del Potro in the 2018 U.S. Open Final. That's pretty amazing. So when you're that badass, you get to celebrate by screaming "This Is Sparta" with actor Gerard Butler...

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Apparently this is a thing they've done before...



(Barstool Sports)