Brian Davis fired a 6-under 65 in Thursday's first round and the Englishman holds a 1-shot lead over Sean O'Hair and Ricky Barnes at the Valspar Championship.

Davis, a two-time winner on the European Tour, is looking for his first victory on the PGA Tour. Davis last won at the ANZ Championship in 2004, with his other win coming at the Open de Espana in 2000.

World No. 3 Henrik Stenson and last week's Puerto Rico Open champion Alex Cejka headline a group of six players tied for fourth at 4-under 67. They are joined there by rookie Justin Thomas, Derek Ernst, Brendon de Jonge and Nicholas Thompson.

Defending champion John Senden carded a 3-over 74 in the first round and he is tied for 114th.