Ranked 47th in the world, Arundhati outclassed World No. 14 Eriko 21-14, 21-18 in a first round clash that lasted less than half an hour. The Japanese was a runners-up at the 2011 All England and 2012 Japan Open.
For top shuttler Saina, it was a relatively easy round as the sixth seed Indian, Saina overcame Japan's Nozomi Okuhara 21-14 21-19 in a 39-minute opening match, while world number 12 Kashyap recorded his fourth victory over the eighth seeded Thai Boonsak Ponsana when he beat him 22-20 21-15 in men's singles opening round match that lasted 46 minutes.
Ajay Jayaram too failed to cross the first hurdle, suffering a 18-21 19-21 loss to Wan Ho Son of Korea in a 45-minute match.
Men's doubles pair of Manu Attri and Sumeeth Reddy B too lost in the opening round, losing 14-21 6-21 to Russian combo of Vladimir Ivanov and Ivan Sozonov.
Arundhati was too superior to her rival in the opening game, winning five consecutive points to take a 7-3 lead. Hirose never could recover from that setback as the Indian comfortably took the first game.
The game continued to be closely fought before Arundhati won six consecutive points to take a 19-14. Although Eriko clawed back with four consecutive points, the Indian maintained the upper hand to clinch the issue.
In another match, Olympic Bronze medallist Saina relied on her net game to outclass Nozomi as she registered 19 net winners compared to 11 by the Japanese. The 23-year-old Indian will next take on China's Sun Yu in the prequarterfinals.
