Seventh seed Kidambi Srikanth and Saina Nehwal made a winning start in the singles competition while Chirag Shetty and Satwiksairaj Rankireddy battled past All England champions Muhammad Shohibul Fikri and Bagas Maulana to progress in the Swiss Open in Basel on Wednesday.
Srikanth defeated Dane Mads Christophersen 21-16, 21-17 in a match lasting 32 minutes to advance to the 2nd round.
Parupalli Kashyap too cruised to a 21-17, 21-9 win over France's Enogat Roy to enter the round 2.
Third seeds Chirag Shetty and Satwiksairaj Rankireddy got past Indonesia's Muhammad Shohibul Fikri and Bagas Maulana after losing the first game in the men's doubles opening round. The final scoreline read 17-21, 21-11, 21-18.
The Indonesian duo had won the All England title last week.
In the women's singles, Ashmita Chaliha scripted a come-from-behind win over France's LéOnice Huet, prevailing 19-21, 21-10, 21-11 while Malvika Bansod lost to France's Qi Xuefei 16-21, 17-21 in a match that lasted 42 minutes.
Later in the day, London Olympics bronze medallist Saina outplayed Yaelle Hoyaux 21-8, 21-13 in her opening round fixture.
The mixed doubles duo of Ashwini Ponnappa and Sumeeth Reddy lost their first round match and so did the women's doubles combine of Treesa Jolly and Gayatri Gopichand.
Star shuttler P V Sindhu will play her opening round later tonight.
The Chinese badminton team pulled out of the Super 300 tournament which began on Tuesday due to multiple COVID-19 cases and injuries to its players.