World number one Chen Long took out his Thai opponent in straight sets to progress into the quarter-finals. It is Chen's eighth consecutive win at the world championships.
It only took Lin Dan 37 minutes to send off his Danish challenger in straight sets.
Malaysia's Lee Chong-Wei downed China's Wang Zhengming in straight sets.
In women's singles, Olympic champion Li Xuerui crashed out of action after suffering a three-sets defeat against her opponent from India. Wang Yihan is through with a three-sets win against Bae Yeon Ju from South Korea.
In mixed doubles, Top seeds Zhang Nan/Zhao Yunlei defeated a German pair; second seeds Xu Chen/Ma Jin downed their Taiwan opponents; and Lu Kai/Huang Yaqiong are out.
