Metallica shows off their humorous side in new, "This is SportsCenter" ESPN commercial. Since New York Yankee's relief pitcher, Mariano Rivera retired and took along his entrance song by Metallica, "Enter Sandman" with him. It seems the band is out of work and having a tough time staying productive. In the AD, Metallica is left wandering around the ESPN office searching for a new athlete to provide entrance music for.  

Check It Out Here: