London Games bronze medallist Saina, who had retired midway through her first match at Uber Cup Final due to a groin injury, couldn't match Japan's world no 20 Aya Ohori and lost 21-16, 21-14 in the opening round.
Sindhu dished out a compact game to outwit Sayaka 21-17, 21-16 in a second round match on Thursday to set up a clash with seventh seeded Chinese He Bingjiao.
Indian shuttlers B Sai Praneeth and Sameer Verma lived upto their billing and registered straight game victories to progress to the quarterfinals of the men's singles event at the Australian Open in Sydney, on Thursday.
Indian shuttlers Ruthvika Shivani Gadde and Siril Verma notched up contrasting victories to reach the semifinals of the women's and men's singles events at the Russian Open Grand Prix, in Vladivostok, on Friday.
BAI cancels preparatory camp.
H S Prannoy stunned the legendary Lin Dan of China while compatriot Sameer Verma pipped Rasmus Gemke of Denmark to advance to the second round of the Indonesia Open badminton event.
PV Sindhu will open her campaign against South Korea's Sung Ji Hyun, while Saina Nehwal takes on Scotland's Kristy Gilmour in the first round.
Defending champion Ajay jayaram reached the quarter-finals of the Dutch Open Grand Prix badminton tournament after notching up an easy straight game win over Norway's Marius Myhre in the men's singles competition, in Almere, Netherlands, on Thursday.
A profligate P V Sindhu was, on Wednesday, knocked out of the All England Championship by an industrious Sung Ji Hyun of Korea in the women's singles opening round in Birmingham.
Title-contenders Saina Nehwal and B Sai Praneeth advanced to prequarter-finals of the Thailand Open after notching up straight-game wins in the women's and men's singles competition respectively.
A summary of sports events and persons who made news on Thursday
A summary of sports events and persons who made news on Monday
A summary of sports events and sports persons, who made news on Wednesday
Experienced drag-flicker Rupinder Pal Singh returned to India's men's hockey team, which also features debutant Jaskaran Singh, for the tour of Australia, starting May 10.
Summary of sports events and persons who made news on Wednesday.
Kidambi Srikanth and two-time bronze medallist P V Sindhu will headline a 21-member Indian contingent as they gun for the elusive gold medal at the World Badminton Championships starting in Glasgow on Monday.
Olympic medallists P V Sindhu and Saina Nehwal made a resounding start to their women's singles campaign but it was Sameer Verma who hogged the limelight with a stunning straight-game win over Korean Son Wan Ho in men's event in the opening round of the India Super Series in New Delhi on Wednesday.
The 27-year-old London Olympics bronze medallist hard broke a sweat as she cruised past her Swiss opponent 21-11, 21-12 in just 33 minutes at the Emirates Arena.
PV Sindhu and Kidambi Srikanth advanced into the second round while Saina Nehwal and Sai Praneeth made first-round exits at the All England Open Badminton Championships in Birmingham on Wednesday.
The biggest upset of the day was produced by Hong Kong's Cheung Ngan Yi, who knocked out Olympic champion and last year's finalist Carolina Marin 21-12, 21-19, in a 48-minute clash.
A summary of sports events and persons who made news on Wednesday
A summary of sports events and persons who made news on Sunday
Summary of sports events and persons who made news on Friday
Commonwealth Games champion Parupalli Kashyap knocked out top seed Lee Hyun Il of Korea in the men's singles opening round of the US Open Grand Prix Gold badminton tournament in Anaheim, United States.
A summary of sports events and persons who made news on Wednesday.
A summary of sports events and persons who made news on Thursday