At about 1337 Eastern time, the airplane experienced a collapsed nose landing gear during the landing roll. Visual conditions prevailed. The airplane was substantially damaged, although the Private pilot and single passenger were not injured. The pilot later stated he confirmed the landing gear was down and locked while turning final. He maintained approximately 85-87 knots on final and landed with two notches of flaps extended. The landing was smooth. During the landing roll, the airplane started veering to the left. Although the pilot attempted to correct, the airplane continued to the left off the runway onto the grass, colliding with a runway light.