Villegas leads the way on tight Humana Challenge leaderboard
Leading: Camilo Villegas hits off the ninth tee
Colombia's Camilo Villegas led the way on nine under par in the first round of the Humana Challenge at La Quinta Country Club.
Villegas, starting on the back nine on the Nicklaus course, shot nine birdies, including five in his first seven holes, through 17.
American David Toms, who was playing the La Quinta course, was a shot further back on eight under through 16, having recorded eight birdies, including four in a row from the fifth.
His compatriot Ted Potter Jr, was seven under through 16 on the Nicklaus course to sit third.
Potter, who began on the back nine, picked up five straight birdies from the first.
The pro-am tournament, previously known as the Bob Hope Classic, has a change of format this year.
Rather than the five rounds of previous years, where players have played in groups of four made up of one professional and three amateurs, this year the tournament is played over four rounds, one each at the La Quinta, Palmer and Nicklaus courses before the final round is also played on the Palmer course.
A group of six players were tied for fourth on six under, including American quartet Bud Cauley, Steve Marino, Kevin Sutherland and Brandt Snedeker, Canadian Stephen Ames and Bae Sang-moon of South Korea.