Olympic gold medal pair Markis Kido and Hendra Setiawan of Indonesia were beaten by an unheralded British duo in the men's doubles final of the US $200,000 Aviva Open in Singapore on Sunday.
Anthony Clark and Nathan Robertson, ranked 19th in the world, shocked the No 1 ranked Indonesians in a dominant 21-12, 21-11 victory in the fifth Super Series event of the year, which continues next week in Jakarta.
Bao Chunlai of China won the men's singles final in a hard-fought match against Thailand's Boonsak Ponsana, 21-19, 16-21, 21-15.
Earlier in the tournament, world No 1 Lee Chong Wei lost to Vietnamese shuttler Nguyen Tien Minh.
In the women's singles final, Hong Kong's Zhou Mi, ranked No 2 in the world, defeated former world No 1 Xie Xingfang of China 21-19, 18-21, 21-10.
In the women's doubles final, China's Zhao Tingting and Zhang Yawen defeated Indonesia's Nitya Krishinda Maheswari and Greysia Polii, 21-14, 21-13.
Zheng Bo and Ma Jin beat their Chinese counterparts Zhang and Xie Zhongbo, 19-21, 21-19, 21-11 to win the mixed doubles crown.