 On October 23 , 2007 , former New York City mayor Rudolph Giuliani , who is a Yankee fan , said at a New Hampshire event for his presidential campaign that he was going to cheer for the Red Sox during their World Series appearance against the Colorado Rockies . Giuliani justified his support of the Red Sox by proclaiming he was a fan of American League baseball . The following day , the New York Post and New York Daily News printed doctored photos of Giuliani as a Red Sox fan on their covers with the headlines " RED COAT " and " TRAITOR ! " respectively . Topps parodied this in a 2008 baseball card altered to depict Giuliani on the field with the Red Sox as the team celebrated their 2007 World Series championship . 
