The South African had 11 birdies and two bogeys in the third round at Castello di Tolcinasco Golf and Country Club. He is at 22-under 194.
I played very well today, very well indeed and I am very pleased, Otto said. I put the ball close to the pins with my irons today and gave myself a lot of chances.
Robert Karlsson, who shot a course-record 61 Friday, had a 69 to be in a tie for second place with Christian Nilsson and Alvaro Velasco.