At 16:30 mountain time, the pilot of a Cessna 172F lost control during takeoff from runway 30 at Clovis Municipal Airport. The pilot was not injured. The pilot told investigators the airplane started to drift to the left during the takeoff roll and went off the runway surface. He said there was a little crosswind, so he applied a little right rudder and lowered the left wing. The aircraft veered back to the right, nosed over and the right wing tip struck the ground.