Meanwhile, second seed and first week's winner Young-Jun Kim of South Korea stayed on course for a second title, beating Indian qualifier Mithun Murali 6-1, 6-4. The 29-year-old Kim next plays Indian wildcard Jeevan Nedunchezhiyan, who rallied to beat Malaysian Yew-Ming Si 3-6, 6-4, 7-6 (5).

Fourth seeded Ranjeet Virali Murugesan overcame a second set fightback from wildcard Johny Arcilla of the Philippines 7-6(4), 2-6, 6-0 to set up a meeting with eighth-seeded compatriot Rupesh Roy, who beat Vijayant Malik, 6-7(1), 6-2, 6-1.