At a small park in Pyne Poynt on the north side of Camden, N.J., kids take practice cuts on the infield dirt and adjust their hats. A small but enthusiastic crowd shouts words of encouragement, but the cheering parents and playful bench-side scuffles only momentarily disguise the troubles in the city. Baggies, vials and hypodermic needles litter the same field where practice is being held.