Hennie du Plessis hit a brilliant 62 to carve open a two-shot lead on a mammoth Saturday at the Joburg Open.
Weather delays on Thursday and Friday meant a lot of the field had to complete their second rounds on Saturday morning.
South African Du Plessis parred his final nine holes of his second round, but found momentum in the afternoon to equal the course record at Houghton Golf Club.
The 29-year-old carded 10 birdies and two bogeys to set the clubhouse target of 14-under par, which nobody could match.
Brandon Robinson-Thompson, who led by three ahead of round three, Casey Jarvis, Dan Bradbury and Alex Fitzpatrick are in a share of second at 12 under.
