Jacob Fitz finished a corner kick from Austin Blatt with three seconds left in the second half as the Blue Devils nipped the rival Wildcats in a nonleague game at John D. Sulsberger Memorial Stadium.
Fitz converted the goal with a header to the upper right corner.
Zanesville (5-1-2) held an 8-6 edge in shots on goal. Coach Steve Randles credited the play of midfielders Neal Edwards, Doug Welker and Blatt as keys.
Eric Walker had six saves for the Blue Devils and Eli Hamilton seven for Newark (1-6-0).