Major League Baseball started running an authentication program in 2001 after the FBI discovered during an investigation that 75 percent of autographs purported to be from MLB players and other personnel were fake. The organization has had a long-running issue with counterfeiting in general, which peaks during the postseason. For example, during the 2011 National League Championship Series between the St Louis Cardinals and the Milwaukee Brewers, MLB officials confiscated over 5,000 counterfeited items, with more than 80 percent being found in the vicinity of Busch Stadium. The largest haul is during the World Series, when thousands of knock-off jerseys, caps, bags, and other items of merchandise are seized. During the San Francisco Giants’ 2014 World Series race, United States Immigration and Customs Enforcement agents seized over 2,700 pieces of counterfeit MLB merchandise in the San Francisco Bay Area.