Kevin Yu of Taiwan shot an 8-under 64 on the North Course at Torrey Pines to take a one-shot lead over Patrick Cantlay and Ryo Hisatsune in the opening round of the Farmers Insurance Open. The eight lowest scores came on the North Course, which generally plays a few strokes easier than the South Course on the municipal layout on a bluff high above the Pacific Ocean. Players have a round on each course before the cut. The final two rounds are played on the South Course.