The private certificated pilot was departing in a tailwheel-equipped airplane on a Title 14, CFR Part 91 personal flight. During the takeoff roll, the airplane began to veer to the left. The pilot stated that he applied right rudder and right brake, but the airplane continued to turn left. It departed off the runway and ground looped to the right. The right main landing gear collapsed, and the right wing struck a runway edge light and the ground. The airplane received structural damage to the right wing and fuselage.