Published: Jan 19, 2012 5:07 PM EST
Updated: Jan 20, 2012 7:31 AM EST

GEORGE, South Africa (AP) - Nicolas Colsaerts of Belgium opened with a course record 9-under-par 64 to lead the first round of the Volvo Golf Champions at The Links at Fancourt on Thursday.

Colsaerts has a four-stroke lead over South Africa's Branden Grace and Thomas Aiken and England's Tom Lewis.

The previous course record was 68 set by Tim Clark and Ross Fisher in the first round of the 2005 South African Open.

Padraig Harrington showed glimpses of a return to form with a 69, despite a double-bogey 7 at the last hole.