LOS ANGELES: Taiwan's Kevin Yu, chasing a first US PGA Tour title, carded eight birdies in his eight-under par-64 to take a one-shot lead after the first round of the Farmers Insurance Open at Torrey Pines on Wednesday (Thursday in Manila).

Yu, a former world amateur number one who missed four months after suffering a torn meniscus in his left knee last February, edged a stroke clear of world number six Patrick Cantlay and Japanese rookie Ryo Hisatsune with his bogey-free effort at Torrey Pines North Course, one of two in use for the tournament.