When New York Yankees closer Mariano Rivera retired, that meant you would no longer hear his entrance music at games.

Rivera came to the field to Metallica's Enter Sandman.

That means the band doesn't have much to do.  At least that is the premise for a new This Is Sportscenter commercial.  The ad will air during Monday night's Home Run Derby.

Washington Nationals outfielder Bryce Harper recently starred in his own This is Sportscenter commercial.