"What is important is playing your best," he said in a text message when contacted by ANTARA to comment on his prospects against Chong Wei.
The game on Sunday between the two competitors will be their 13th, with the Malaysian recording seven victories.
"We must not be afraid. In terms of the game, I have strong confidence in my abilities. I have no doubt about it," he remarked with optimism.
Sony proceeded to the final round after beating seeded Japanese player Kenichi Tago in a rubber set 21-12, 19-21, 23-21.
Chong Wei, meanwhile, entered the round after defeating Jan O Jorgensen from Denmark 21-13, 17-21, 21-12. This is Chong Wei`s sixth victory against the Danes in seven meetings.
Indonesian doubles players Mohammad Ahsan and Hendra Setiawan followed Sony, going into the final round after overpowering Chai Biao-Liu Xialolong from China 21-12, 21-11 in 24 minutes.
In the finals, they will meet Lee Yong Dau-Ko Sung Hyung from South Korea.
When contacted to comment on their prospects, Hendra noted he was not afraid of the world`s sixth-ranked badminton players from South Korea.
"What is important is focus," he said.
Indonesian Vita Marissa in a pairing with Variella Aprilsasi Putri Lejarsar, meanwhile, failed to enter the final round of the women`s doubles event as well as the final round of the mixed doubles event in a pairing with Praveen Jordan.
Vita-Variella surrendered to Chinese players Tian Qing and Bao Yixin 13-21, 17-21.
Vita and Praveen were beaten by Joachim Fischer and Christinna Pedersen in the mixed doubles 21-14, 21-17.