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.

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)

Crowne Plaza Invitational at Colonial - Round Two

FORT WORTH, TX - MAY 25: Zach Johnson watches a pitch shot on the 11th hole during the second round of the Crowne Plaza Invitational at Colonial at the Colonial Country Club on May 25, 2012 in Fort Worth, Texas. (Photo by Scott Halleran/Getty Images)

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

Crowne Plaza Invitational at Colonial - Round Two

FORT WORTH, TX - MAY 25: Harris English looks over the eighth green during the second round of the Crowne Plaza Invitational at Colonial at the Colonial Country Club on May 25, 2012 in Fort Worth, Texas. (Photo by Scott Halleran/Getty Images)

Crowne Plaza Invitational at Colonial - Round Two

FORT WORTH, TX - MAY 25: Rickie Fowler watches his tee shot on the second hole during the second round of the Crowne Plaza Invitational at Colonial at the Colonial Country Club on May 25, 2012 in Fort Worth, Texas. (Photo by Scott Halleran/Getty Images)

Crowne Plaza Invitational at Colonial - Round Two

FORT WORTH, TX - MAY 25: Jason Dufner watches his tee shot on the second hole during the second round of the Crowne Plaza Invitational at Colonial at the Colonial Country Club on May 25, 2012 in Fort Worth, Texas. (Photo by Scott Halleran/Getty Images)

Crowne Plaza Invitational at Colonial - Round Two

FORT WORTH, TX - MAY 25: Ryo Ishikawa of Japan watches his approach shot on the third hole during the second round of the Crowne Plaza Invitational at Colonial at the Colonial Country Club on May 25, 2012 in Fort Worth, Texas. (Photo by Scott Halleran/Getty Images)

Crowne Plaza Invitational at Colonial - Round Two

FORT WORTH, TX - MAY 25: Tommy Gainey watches his tee shot on the 12th hole during the second round of the Crowne Plaza Invitational at Colonial at the Colonial Country Club on May 25, 2012 in Fort Worth, Texas. (Photo by Scott Halleran/Getty Images)

Crowne Plaza Invitational at Colonial - Round Two

FORT WORTH, TX - MAY 25: Louis Oosthuizen of South Africa watches his tee shot on the 12th hole during the second round of the Crowne Plaza Invitational at Colonial at the Colonial Country Club on May 25, 2012 in Fort Worth, Texas. (Photo by Scott Halleran/Getty Images)

Crowne Plaza Invitational at Colonial - Round Two

FORT WORTH, TX - MAY 25: Jason Dufner smiles as he walks up the 11th fairway during the second round of the Crowne Plaza Invitational at Colonial at the Colonial Country Club on May 25, 2012 in Fort Worth, Texas. (Photo by Scott Halleran/Getty Images)