The list, released jointly by Major League Baseball and the MLB Players Association, is based on sales of Majestic jerseys from MLB.com/Shop, the official online shop of Major League Baseball, since the 2013 World Series concluded.
Posey led these rankings in mid-2013, coming off his National League Most Valuable Player season and the Giants' World Series triumph.
Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, and follow him on Twitter at @sfgiantsbeat. This story was not subject to the approval of Major League Baseball or its clubs.