Murray accepted the award on behalf of the Cubs from fellow comedian and Cubs fan Nick Offerman.
While Murray was speaking, a masked janitor with a Cubs mop bucket walked behind Murray. Murray then turned around and pulled out a sword and a bottle of champagne from the mop bucket, using the sword to open the bottle.
Bill Murray is still celebrating the Cubs' World Series win. #ESPYS pic.twitter.com/ZQJe755R9x
— ESPN (@espn) July 13, 2017
The masked janitor then revealed himself to be former Cubs catcher and "Dancing With The Stars" contestant David Ross, who proceeded to launch into his dance moves.
Offerman and Ross each joined Murray in opening a bottle of champagne with the sword.