Kunlavut Vitidsarn and Busanan Ongbamrungphan advanced to the last-16 stage of the Badminton Asia Championships in Ningbo, China, yesterday.
Kunlavut cruised past Prince Dahal of Nepal 21-3, 21-11 in the men's singles opener while Busanan knocked out Aakarshi Kashyap of India 21-10, 21-11 in her women's singles first round match.
Reigning world champion Kunlavut will face Nguyen Hai Dang of Vietnam in the last 16 while Busanan will have a tough match against top-ranked An Se-Young of South Korea.
An battled past Nozomi Okuhara of Japan 21-15, 18-21, 21-17 in her first round match.
Men's doubles pair Supak Jomkoh and Kittinupong Kedren also advanced after their upset win against eight seeds Muhammad Shohibul Fikri and Bagas Maulana of Indonesia.
The Thai duo bounced back from losing the first game to win 15-21, 21-16, 21-17.
It was their first win in five meetings with the Indonesians.
Another women's singles hope Supanida Katethong failed to get past the first hurdle, losing to Chen Yufei of China 14-21, 16-21.
Chen will play meet Sim Yu-Jin of South Korea in the last 16.
In the women's doubles event, Laksika Kanlaha and Phataimas progressed with a 21-13, 22-20 win over Hsu Ya-ching and Lin Wan-ching of Taiwan.
But Jongkolphan Kititharakul and Rawinda Prajongjai bowed out to Nami Matsuyama and Chiharu Shida of Japan 21-17, 18-21, 16-21.
In other women's singles results yesterday, Tai Tzu-ying of Taiwan beat Lo Sin Yan of Hong Kong 21-10, 21-16, Aya Ohori of Japan defeated Nguyen Thuy Linh of Vietnam 21-14, 21-15 and He Bingjiao of China knocked out Ranithma Liyanage of Sri Lanka 21-13, 21-9.
In the men's singles, Shi Yuqi of China edged Lakshya Sen of India 21-19, 21-15 and Lee Zii Jia of Malaysia defeated Priyanshu Rajawat of India 21-9, 21-13.