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Jason Dufner hits out of a bunker onto the eighth green during the second round of the PGA Colonial golf tournament Friday, May 25, 2012, in Fort Worth, Texas. (AP Photo/Tony Gutierrez)

Jason Dufner hits out of a bunker onto the eighth green during the second round of the PGA Colonial golf tournament Friday, May 25, 2012, in Fort Worth, Texas. (AP Photo/Tony Gutierrez)

Dufner seizes two-shot lead at Colonial

Jason Dufner, chasing his third PGA Tour title of the season, fired a bogey-free 64 on May 25 to seize a two-shot lead in the Colonial in Fort Worth, Texas.