Unheralded trio share Humana lead
Roberto Castro, Jason Kokrak and James Hahn shared the lead after the first round of the Humana Challenge in California.
Castro, Kokrak and Hahn are on nine under at the end of day one.
None of the three players dropped a shot, but it was perhaps Kokrak's round - played on the La Quinta course - which was the most eye-catching, containing eagles at two par-five holes, the sixth and the 11th.
Hahn and Castro, who played on the PGA West Palmer and Nicklaus courses respectively, each carded nine birdies.
Kokrak is ranked 244th in the world, Hahn 245th and Castro 282nd.
Another American, world number 50 Russell Henley, headed a group of four players on eight under, alongside Australians Greg Chalmers and Aaron Baddeley as well as Doug LaBelle of the United States.
Jeff Maggert, Michael Bradley and Ricky Barnes were among nine players on seven under, while Sweden's Jesper Parnevik led the European challenge on five under.
Brian Davis led the way among the British contingent on four under, one stroke ahead of Martin Laird and David Lynn.
But on a day which saw 121 of the 156-strong field finish under par, Greg Owen could only manage a level-par 72 to sit alongside the tournament's most high-profile player, Phil Mickelson, while Ross Fisher was two over.
Defending champion Mark Wilson had a day to forget as he carded a five-over-par 77.