As many as five singles players, including Aditi Mutatkar [ Images ] and Ajay Jayaram, and two doubles pairs, reached the pre-quarter-finals as India [ Images ] had a resounding day at the Vietnam Open Grand Prix [ Images ] badminton tournament in Ho Chih Minh City on Wednesday.

Unseeded Mutatkar, who has been battling with her form and fitness for quite sometime, produced a stunning game to outclass fourth seed Ai Goto of Japan [ Images ].

Aditi, who is ranked 133rd in the world currently, held her nerve to beat world No 24 Goto 21-18, 14-21, 21-16 in a 45-minute women's singles match.

She will next meet Hsiao Huan Chen of Chinese Taipei in the pre-quarters on Thursday.

Young prodigy P V Sindhu also showed her brilliance as she edged past Chinese Taipei's Shih Han Hung 22-24, 25-23, 21-19 in a battle of attrition which lasted for one hour and seven minutes. Sindhu will face sixth seed Aprilla Yuswandari of Indonesia.

Arundhati Pantawane, who emerged as a surprise runner-up at the this year's National Badminton Championship at Rohtak, also notched a 21-18, 12-21, 21-14 victory over fifth seed Juan Gu of Singapore.

The Nagpur girl will take on Jing Yi Tee of Malaysia in the next round.

In the men's singles, 12th seed R M V Gurusaidutt sent Soon Huat Goh packing 21-18, 21-11 in a 38-minute match. The Andhra Pradesh shuttler will now take on seventh seed Jen Hao Hsu of Chinese Taipei in the next round.

World championship quarter-finalist Ajay Jayaram, seeded fifth, also reached the pre-quarter-finals after a 21-14, 21-14 thrashing of local player Ha Anh Le.

In another men's singles encounter, H S Prannoy put up a gallant fight before losing 21-17, 16-21, 12-21 to fourth seed Alamsyah Yunus of Indonesia.

In the women's doubles, Aparna Balan and Siki Reddy N beat local pair Huynh Ngoc Uyen Lam and Thi Thanh Thuy Le 21-11, 21-11 in just 22 minutes.

In the mixed doubles, fourth seeds Arun Vishnu [ Images ] and Aparna Balan saw off Calvin Jia Hong Ong and Chiew Sien Lim 21-8, 21-14 in a 25-minute clash.

However, in the men's doubles, the Indian pair of Manu Attri and Jishnu Sanyal crashed out, losing 7-21, 21-17, 17-21, to Low Juan Shen and Jagdish Singh of Malaysia.