PETALING JAYA: World No. 6 Man Wei Chong-Tee Kai Wun will need more than their usual grit to defend their Indonesian Masters men’s doubles title when they face familiar rivals Sabar Karyaman-Moh Reza in today’s quarter-finals.

Istora Senayan may hold no fear for Wei Chong-Kai Wun, who lifted the title here last year and finished runners-up at the Indonesian Open the year before.