Widjaja won both of her Group B qualifying matches in straight games at the Muntinlupa Sports Complex.

She beat the Maldives' Fathimath Nabaaha Abdul Razzaq 21-4, 21-8, before easing past the Philippines' home favourite Janelle Anne Andres 21-10, 21-8.

In Group A of qualifying, top seed Yeung Sum Yee of Hong Kong withdrew, allowing Tan Zhing Yi of Malaysia to progress to the main draw with a 21-8, 21-15 victory over Jordan's Domou Amro.

Chinese Taipei's Hsu Wen-Chi awaits her in the first round.

Group C was won by South Korea's Lee Seo-jin, who beat Malaysia's Siti Nurshuhaini 21-13, 21-17, and Hong Kong's Saloni Samirbhai Mehta 21-17, 21-17.

Yue Yann Jaslyn Hooi of Singapore is Lee's first opponent in the main draw.

Indonesia's Komang Ayu Cahya Dewi was the other qualifier after she overcame Malaysia's Mohd Khairul Myisha 21-18, 21-9 and the Philippines' Mikaela Joy De Guzman 25-23, 21-8.

China's Han Yue awaits Dewi.

In men's qualifying, Bahaedeen Ahmad Alshannik of Jordan was handed a walkover through Group A due to the withdrawal of Thailand's Adulrach Namkul, with Hong Kong's Lee Cheuk Yiu his first opponent.

Weng Hong Yang of China triumphed in straight sets against Myanmar's Phone Pyae Naing 21-10, 21-7 and 21-13, 21-8 against the Maldives' Hussein Zayan Shaheed to top Group B and set up a first round tie against Singapore's Jia Heng Jason Teh.

Kazakhstan's Dmitriy Panarin topped Group C with 21-14, 21-8 and 21-12, 21-14 wins against the Philippines' Ros Leonard Pedrosa and Bahrain's Adnan Ebrahim respectively.

Japan's Koki Watanabe is due to play Panarin in the first round.

The other qualifier in Group D was China's Lei Lan Xi, who edged a three-set match 21-16, 13-21, 21-11 against Hong Kong's Chan Yin Chak before seeing off the Philippines' Jewel Angelo Albo 21-8, 21-10.

A tie between Japan's eighth seed Kanta Tsuneyama and Lei completes the first round line-up at the Championships.

The main draws in the men's and women's singles competitions are due to get underway tomorrow in Manila.