Police charged a teenager after an 18-year-old Egg Harbor Township man was found stabbed at an athletic complex in Atlantic County on Friday evening. Officers located the victim at the Childs-Kirk Memorial Park on Idlewood Avenue in Egg Harbor Township around 6 p.m. Friday, according to township police. The facility, which backs up to both the Garden State Parkway and Atlantic City Expressway, is used by the Egg Harbor Township Softball Association and has several multiple-purpose athletic fields, according to the municipal website. Police did not describe the severity of the 18-year-old’s inj…