Second behind Kenny Perry in the Charles Schwab Cup standings, Langer bogeyed the first two holes on the reconfigured Rock Barn layout, then made six birdies for a 4-under 66.
The German star had a 10-under 130 total.
Michael Allen, Brad Bryant and John Riegger were tied for second. Allen shot 65, Bryant had a 66, and Riegger a 67. Bruce Vaughan, who won the qualifying tournament to make the field, shot a 62 to join Olin Browne at 7 under. Browne had a 68. Perry was tied for 17th at 3 under after a 69.
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