The commercial certificated pilot reported that he was landing a tailwheel-equipped airplane while conducting a Title 14, CFR Part 91 personal flight. During the landing roll, as the pilot was making a right rudder application, the nose abruptly veered to the right. The pilot reported that the airplane ground looped to the right, and the left wingtip and left aileron struck the ground. The lens covering a runway edge light fixture was also broken. He said that he inadvertently applied the right brake as he was applying the right rudder correction.