The 2016 Olympic Games have forced the PGA Tour to make one-off changes in their schedule for the 2015-16 season.

Will MacKenzie hit a hole-in-one and four birdies on Saturday as he took a share of the lead at the McGladrey Classic in Georgia.

Moments after Tommy Gainey narrowly missed his putt for a 59, he walked off the 18th green at Sea Island with a two-shot lead over Jim Furyk and Davis Love III, who still had 10 holes to play in the McGladrey Classic.

Webb Simpson took a step towards top spot on the PGA Tour's money list by shooting a seven-under-par 63 to share the lead in the first round of the McGladrey Classic at Sea Island.

Heath Slocum fired a third straight 66 to establish a one-shot lead at the McGladrey Classic at Sea Island, Georgia.