The history of the game of baseball is peppered with interesting stories of attempts to break the rules. Managers have been caught stealing signs; groundskeepers have altered the playing conditions of the field to the advantage of the home team; pitchers have used petroleum jelly, mud, emery boards, or thumbtacks to alter the surface of the baseball; and Major League Baseball players like Albert Belle, Norm Cash, Graig Nettles, and Sammy Sosa, have used corked bats.