Melbourne:Anup Sridhar and Aditya Prakash advanced to the pre-quarterfinals but four other Indians crashed out of the Australian Open Grand Prix's men's singles event here on Wednesday.
Sixth seed Sridhar outplayed local player Hung Pham 21-14, 21-14 in the first round before defeating Malaysian Zulfadli Zulkiffli 21-17, 21-18 in 37 minutes later on Wednesday.
The 26-year-old will next face American Nicholas Jinadasa in the pre-quarters on Thursday.
Prakash notched up an easy win against Australian Jacky Wu 21-12 21-7 in the first round and then stunned third seed Malaysian Tsuen Seng Lee 21-19 21-19 in 39 minutes to set up a clash with James Eunson of New Zealand on Thursday.
However, it was curtains for Gurusaidatt RMV, Abhimanyu Singh, Anand Pawar and Aditya Elango.
After registering an easy 21-5, 21-11 win against Australian Ashwant Gobinathan in the first match, Gurusaidatt failed to get past Indonesian Dionysius Hayom Rumbaka and went down 14-21, 19-21 in the second round.
Seventh seed Pawar too beat Australian Nathan David 21-13, 21-5 in the first round before going down to another Indonesian Alamsyah Yunus 21-17, 19-21, 21-14 in the second round.
Elango also first beat local player Vincent Choo 21-8, 21-13 before losing to fifth seed French Brice Leverdez, while Abhimanyu gave a walk over to his opponent Solomon Mensah Nyarko of Ghana in the first round.
However, it was good news for the Indian mixed doubles pairs as all four of them reached the pre-quarters after winning their respective matches.
Shruti Kurian and Tarun Kona beat the eighth seeded New Zealand combo Kevin Dennerly-Minturn and Louise Mckenzie 21-13, 20-22, 21-9, while Akshay Dewalkar and Pradnya Gadre saw off the local pair of Chad Whitehead and Eugenia Tanaka 21-9, 21-23, 21-17 in the first round.
Another Indian pair, Jishnu Sanyal and Nitya Sosale outlasted the Kiwi duo of Asher Richardson and Melissa Yin 21-12, 21-18, while the fourth seeded pair of Arun Vishnu and Aparna Balan beat New Zealand-Mexican combine of Bjorn Seguin and Angulo Deyanira 21-10, 21-17.
In women's singles, fifth seed Neha Pandit will take on local player Louisa Ma, while Trupti Murgunde will face third seed Kristina Ludikova in the first round on Thursday.