Haddonfield Little League Complex Potter St & Ellis St, Haddonfield, NJ08033 Haddonfield Little League Complex is the home of the Haddonfield Little League, located on Potter and Ellis Street. The…More league follows the official Little League Baseball Handbook published by Little League Baseball of Williamsport, Pennsylvania. Children of various ages and skill levels can find an appropriate teams or program. T-ball is available for very young players, with numerous other teams making up the league. Visit the website for a full list of locations and details on individual teams.