(Reuters) - Canadian rookie Mackenzie Hughes followed his opening 61 with a five-under 67 to increase his advantage to two strokes at the halfway stage of the RSM Classic in St Simons Island, Georgia on Friday.
Hughes was again bogey-free in gentle conditions at the par-72 Plantation Course as he finished 14-under overall to lead another PGA Tour rookie, Pan Cheng Tsung of Taiwan.
Second-placed Pan, in his fifth event as a member of the PGA Tour, fired a six-under 64 at the Seaside Course after hitting 17 greens in regulation.
Four players, including 2003 Players Championship winner Chad Campbell, were tied on 11-under.