The American left-hander is famed for his length off the tee, but he believes that advantage will be negated by the narrow fairways and firm greens at the Olympic Club in San Francisco."There's some golf tournaments you hit more fairways, there's some golf tournaments you don't hit many fairways," he said.

"Obviously this week everybody is going to have trouble hitting fairways and out of the rough."I think with my length, with my so-called strength I can hit irons out of the rough that people can't hit as far . If I can just putt."If it comes down to putting and chipping. The short game is the key around this course.