Digvijay Singh, lying tied second overnight, slipped to tied fourth. Digvijay, however, is still the best placed Indian among the five left after the cut.
Thailand's Prayad Marksaeng maintained his title charge at the inaugural Chiangmai Golf Classic presented by PTT with a second round of five-under-par 67 to stretch his advantage to two shots on Friday.
The 47-year-old local hope, chasing his sixth Asian Tour victory, left four-time major winner Ernie Els in the shade as the South African battled to a 69 with a short putter in his bag for the first time since the end of 2011.