Indian shuttler Saina Nehwal won her first group match against Switzerland's Sabrina Jaquet in straight games in the women's singles badminton event at the Olympics here Sunday.
The World No. 5 won 21-9, 21-4 in 24 minutes at the Wembley Arena.
Saina next faces Tan Lianne on Monday at 2300 IST and that will be a must-win for her, since the Belgian has already won her game. Only one player advances to the round of 16 from a group of three.
But Indian mixed doubles pair Jwala Gutta and V. Diju jeopardised their chances of making the knockout round after suffering a second successive defeat.
The Indians, who were beaten by third-seeded Indonesian pair in the first match Saturday, Sunday morning to Denmark's Thomas Laybourn and Kamilla Rytter Juhl in straight games, 12-21, 16-21, in a Group C match at the Wembley Arena.
The World No.13 duo were no match for their eighth-ranked opponents in the first game, losing it in 13 minutes. They put up a better show in the second but it wasn't enough to trouble the Danes.
Jwala-Diju play South Korea's Jung Eun Ha and Yong Dae Lee in their must win final group game Tuesday.