Seventh seed Sindhu lost 14-21 18-21 to Bing Jiao in the women's singles.
Saina and Busanan engaged in some long rallies but it was the Thai shuttler who had the last laugh
In other matches, former Singapore Open champion B Sai Praneeth's fight lasted just 35 minutes as he went down 12-21, 17-21 to 24-year-old Ng Ka Long Angus in the second round. It was his third loss to the World No 15 from Hong Kong.
H S Prannoy lost in the opening round even as compatriots Saina Nehwal and P V Sindhu entered the second round of the $ 350,000 India Open Super 500 tournament, in New Delhi on Wednesday.
A summary of sports events and sports persons, who made news on Thursday
A summary of sports events and persons who made news on Saturday
Top seed Sameer, who won the Swiss Open earlier this year, had to dig deep into his reservoir to outwit compatriot Pratul Joshi 16-21, 26-24, 21-7 in 55 minutes. In another quarter-final, Gurusaidutt, a former Commonwealth Games bronze medallist, recovered from a game down to beat Malaysia's Lim Chi Wing 13-21, 22-20, 21-11 in 59 minutes.
Summary of sports events and persons who made news on Sunday