It's been a see-saw at the top of the leaderboard in Fort Worth, but Zach Johnson has taken a one-stroke lead through 14 over Jason Dufner. The pair started the day with Johnson at 14-under and Dufner at 15-under, but they've swapped positions.
Johnson had a two-stroke lead after birdieing 11 while Dufner bogeyed, but gave it back on the par-four 12th. Johnson gave up a stroke after hitting into the sand trap, as his first attempt to leave the sand hit the lip of the trap and ended up about five feet behind where the initial shot was taken. He bogeyed the hole while Dufner birdied to see them tied at 14-under. Later, Johnson nailed a 15-foot putt on the 14th to give him the one-stroke lead.
For a live leaderboard, visit Golf.com.