By Mark Lamport-Stokes
KAPALUA, Hawaii (Reuters) - Defending champion Zach Johnson was among four players tied for the lead after an ideal day for low scoring in the second round of the Hyundai Tournament of Champions on Saturday.
Johnson, who clinched last year's title by one shot, fired a six-under-par 67 on the hilly Plantation Course at Kapalua Resort to finish level with fellow Americans Jimmy Walker (68) and Russell Henley (70), and South Korea's Bae Sang-moon (69).
Walker, a three-times winner on the 2013-14 PGA Tour, was the only player in the elite field of 34 to get to 12 under for the tournament but he bogeyed the par-four 17th on the way to an 11-under total of 135 on the Hawaiian island of Maui.
Six players held at least a share of the lead in the second round of the opening PGA Tour event of the year and the eighth of the wrap-around season for 2014-15.
(Editing by Gene Cherry)