Austin Cook increases lead to 3 shots at Sea Island

PGA Tour rookie Austin Cook shot a 4-under 66 on Saturday to increase his lead to three strokes in the RSM Classic. Cook, a shot ahead after a second-round 62, had five birdies and a bogey — his first of the week — to reach 18-under 194 with a round left at Sea Island Golf Club's Seaside Course. Chris Kirk was second after a 64. Brian Gay was another stroke back at 14 under after a 69. J.J. Spaun had a 62 to get to 13 under. Cook has made the weekend cuts in all four of his starts this season. The 26-year-old former Arkansas player earned his PGA Tour card through the Web.com Tour.