La Quinta, CA (Sports Network) - Jason Kokrak, Roberto Castro and rookie James Hahn all fired a 9-under 63 on Thursday to share a one-stroke lead after the opening round of the Humana Challenge.

Russell Henley, Greg Chalmers, Doug LaBelle II and Aaron Baddeley are tied for fourth place at 8-under. The rookie Henley is coming off a three-shot win at the Sony Open in Hawaii.

More to follow.

The Sports Network