On June 24, 2000, about 1900 hours Pacific daylight time, a Cessna A185F, N185DE, was substantially damaged during a nose over on the landing rollout at Marana, Arizona. The airplane was owned and operated by the private pilot, who was not injured. Visual meteorological conditions prevailed for the personal flight, which was operated under 14 CFR Part 91. No flight plan was filed. The pilot stated to the Safety Board investigator that he was landing, and during the rollout he applied an excessive amount of braking, which caused the airplane to nose over. At the pilot's last documented third-class flight physical he reported a total flight time of 15 hours. He also stated that there were no airplane or weather issues. The pilot did not provide the Safety Board Pilot/Operator Aircraft Accident Report, Form 6120.1/2.