Top seeds Jan O Jorgensen and Lin Dan both earned solid wins in the second round of the German Open on Wednesday.
Jorgensen was up against Wong Wing Ki Vincent of Hong Kong, and needed just 35 minutes to complete a 21-12, 22-20 victory.
Lin faced Dutch player Mark Caljouw, and eased to a similarly convincing 22-20, 22-11 win.
Fourth seed Chou Tien Chen also advanced, beating fellow Taipei player Tzu Wei Wang 21-16, 16-21, 21-11.
Chinese fifth seed Tian Houwei had too much firepower for England’s Toby Penty, winning 21-9, 21-17, while sixth seed Kidambi Srikanth had to battle back from a game down to beat Dutch qualifier Erik Meijs 15-21, 21-6, 21-16.
Fellow top seeds Hu Yun, Wei Nan and Son Wan Ho were all winners as well.
In the women’s draw, tournament top seed Li Xuerui of China reached the second round in straightforward fashion, defeating Karin Schnaase of Germany 21-15, 21-10.
South Korean third seed Sung Ji Hyun also advanced, thumping Minatsu Mitani 21-8, 21-12, while fourth seed Wang Shixian of China is through after beating another local player, Olga Kanon, 21-16, 21-6.
Fifth seed Nozomi Okuhara of Japan also avoided an upset with a 21-12, 21-13 victory over qualifier Kristina Gavnholt.
Joining the rest of the top seven women in the second round were Japan’s Akane Yamaguchi and Pusarla V Sindhu of India.