Kunlavut Vitidsarn eased into the second round of the US$475,000 (approx 15.2 million baht) BWF Arctic Open in Finland on Wednesday.
The Thai top seed cruised past Ayush Shetty of India 21-15, 21-16 in his opening match of the World Tour Super 500 event on Wednesday.
Kunlavut will face Yushi Tanaka of Japan in the last 16 on Thursday.
Women’s doubles pair Benyapa Aimsaard and Sabrina Sophita Wedler made an early exit after losing to eighth seeds Hsu Yin-Hui and Lin Jhih-yun of Taiwan 12-21, 13-21.
Women’s singles hopes Ratchanok Intanon and Busanan Ongbamrungphan both reached the last 16 after winning their first round matches on Tuesday.
Second seed Ratchanok defeated Romane Cloteaux-Foucault of France 21-5, 21-12 and will play Tanya Hemanth of India in the last 16.
Fourth seed Busanan defeated Polina Buhrova of Ukraine 21-15, 21-13 in the first round and will next meet Line Christophersen of Denmark.
The two could face each other in the semi-finals.
Mixed doubles world No.3 pair Dechapol Puavaranukroh and Supissara Paewsampran also came through their opener on Tuesday, beating Dutch players Andy Buijk and Meerte Loos 21-7, 21-12 in only 23 minutes.
The third seeds will play Czech pair Ondrej Kral and Tereza Svabikova in the last 16.
Dechapol and Supissara won the China Masters last month, their fourth title this year and sixth overall.
Another mixed pair, Pakkapon Teeraratsakul and Sapsiree Taerattanachai, ended a string of first-round exits after an upset win over fourth seeds Guo Xinwa and Chen Fanghui of China 21-7, 21-15 on Tuesday.
They will play Mads Vestergaard and Christine Busch of Denmark in the last 16 on Thursday.
Also, men’s third seed Christo Popov of France, fifth seed Kodai Naraoka of Japan and Lee Chia-hao of Taiwan all won their opening matches on Wednesday.