Updated

Thailand's Prayad Marksaeng shot a 6-under 66 on Saturday to take a five-stroke lead after the third round of the Asian Tour's Chiangmai Classic.

Prayad had an 18-under 198 total at Alpine Golf Resort.

Thailand's Thongchai Jaidee and Australia's Matthew Stieger were tied for second.

Four-time major champion Ernie Els was eight strokes back after a 66.