The lowest golf score over an 18 hole course (male) is 55, and was achieved by Rhein Gibson (Australia) at the River Oaks Golf Club in Edmond, Oklahoma, USA on 12 May 2012.

River Oaks course measures 6,700 yards with a par score of 71.

Rhein’s round included 2 eagles and 12 birdies, and the rest of the holes were par for the course.