Wall, of Shrewsbury, Mass., held off the charges of Matt Lowinski-Loh in the closing stages.
Lowinski-Loh of Milford, Mass. was second and Rick Gentes of Woonsocket, R.I. third.
John Zych Jr. of Mendon, Mass. won his second consecutive Northeatern Midget Association Event in the 25-lap feature for the divison.
Zych also won Saturday at the New London-Waterford Speedbowl.
Seth Carlson of Brimfield, Mass. was second and Jim Chambers of Atkinson, N.H. third.
Josh Wood of Palmer, Mass. got his third win of the season in the 20-lap Limited Sportsman feature.
Corey Hutchings of Salem was second and Ryan Waterman of Danielson third.
Joe Baxter of Pascoag, R.I. won the 15-lap Mini Stock feature. Wayne Burroughs Jr. of Oakdale was second and Brad Caddick of Wyoming, R.I. third.
Editors note: According to results published on the Thompson Speedway website Thursday morning, Baxter was disqualified from victory in the Mini Stock feature, giving the win to Burroughs, moving Caddick to second and Eric Bourgeois of East Haddam to third. No explanation was published for the disqualification.