Matt Kuchar was not at his best but did enough to maintain the lead in the second round at the Genesis Open on Friday, as Rory McIlroy and Adam Scott loomed large in the rear view mirror in perfect winter conditions.

On a day when tournament host Tiger Woods frittered away several shots with some poor wedge play and fell nine shots from the lead, Kuchar compiled a respectable two-under-par 69 at Riviera Country Club.

In search of his 10th PGA Tour victory, Kuchar posted a nine-under 133 total and was relieved not to inflict any major damage on himself.