The Phanatic, former Phillies players Milt Thompson, Mickey Morandini and Dickie Knowles were all at the field in Sewell on Thursday.
The Miracle League gives children with neurodiverse needs the chance to play baseball.
They have a specially designed rubber field to keep all the players safe.
Any child ages 4 to 21 who lives in Gloucester County and is enrolled in the special services school district can take part.