2-shot swing on 11 puts Zach Johnson up 2

FORT WORTH, Texas -- No. 9 isn't the only hole that might sink Jason Dufner's chances of securing the DFW double. He bogeyed No. 11 after teeing off into the rough and then coming down in a bunker.

Meanwhile, Zach Johnson, who took a brief lead after No. 2 and then fell behind by two strokes after No. 8, suddenly finds himself in the lead at minus-15 and two strokes ahead of the faltering Dufner, who is plus-2 in today's final round of the Crowne Plaza Invitational at Colonial.

Johnson birdied No. 11 with a beautiful putt of near 19 feet.

While Dufner is looking to become the first since Tiger Woods in 2009 to win back-to-back golf tournaments on the PGA Tour, Johnson is seeking his second Colonial plaid jacket in three years.