1 of 8
Chris Carlson, Associated Press
David Toms watches his tee shot on the first hole during the first round of the Humana Challenge golf tournament at La Quinta Country Club in La Quinta, Calif., Thursday, Jan. 19, 2012.

LA QUINTA, Calif. — David Toms and Colombia's Camilo Villegas shot 9-under 63 to top a leaderboard dotted with impressive scores in the opening round of the Humana Challenge on Thursday.

Ted Potter Jr., Sang-moon Bae and Brandt Snedeker were one stroke behind at 8 under in postcard-perfect weather on the pro-am tournament's three generous Palm Springs-area courses.

Villegas and Toms both played bogey-free golf at the erstwhile Bob Hope Classic, which acquired a new title sponsor and dropped one day of its traditional five-round format this year.

Toms shook off an unimpressive start to his season in Hawaii with excellent play alongside Phil Mickelson at the La Quinta Country Club, which features the tournament's toughest course. Mickelson struggled to a 74.

Villegas made nine birdies in his season and tournament debuts.