SUZHOU, China -- South Korea's Kim Do-hoon shot a 3-under 69 on Friday to take a one-stroke lead after the second round at the China Open.
Kim is 11-under 133 at the Jinji Lake Golf Club in Suzhou outside of Shanghai.
Kim could have been further ahead, but he bogeyed the 18th to go with his four birdies in the $2.5 million event, which is co-sanctioned by OneAsia and the European Tour.
Thongchai, who like Kim had an opening round of 64, managed a 70 on Friday. He was playing with an injured left arm that forced him to pull out of the second round of the Masters last week.
Yang shot a 66, while Donaldson carded a 68 on the par-72 course.
U.S. Ryder Cup captain Corey Pavin was tied for eighth at 7 under with South Koreans Kim Dae-hyun and Noh Seung-yul after an up-and-down round in which he mixed four bogeys with six birdies.