Donald has done just about everything on Harbour Town Golf Links the past five years — except win. He lost in a playoff to Brandt Snedeker here in 2011, part of a run of four top-three finishes since 2009. Donald had an eagle and six birdies to finish at 8-under 205 and carry the lead into Sunday here for the second time in that stretch.
Huh shot a 68 and was at 6 under.
Major champions Charl Schwartzel (68) and Jim Furyk (71) headed a group tied for third at 5 under.
Matt Kuchar, ranked sixth in the world, shot 70 as part of a group another shot back at 4 under.