New Delhi: The Swiss Open triumph has come as a shot in the arm for ace Indian shuttler Saina Nehwal in an Olympic year but she needs to keep improvising her strokes to stay a step ahead of the Chinese who had sorted her out, says national coach and her mentor Pullela Gopichand.

The World number five Saina on Sunday defeated third-ranked Shixian Wang of China 21-19 21-16 in a thrilling 48-minute contest to defend her women's singles title in Basel, Switzerland.

"It is a very important victory for Saina. She was playing well even last year but some close matches here and there, which could have gone either way, cost her a lot. But today she beat Shixian quite comfortably in the end," said Gopichand.

"This win will give her a lot of confidence. It is an Olympic year and it will help her to prepare for the London Games. She needs to peak now," he added.

Gopichand said it is difficult for Saina to keep her competitive edge over so many Chinese at the top and the Indian needs to adapt and evolve her game if she has to go on to win more titles for the country.

"In a way, they had figured her out but it is easier for them. For China, it is just one Saina but for her it is five or six Chinese against whom she has to compete. They naturally target her but still she has done well," he said.

"She is playing the Chinese shuttlers day in and day out, so Saina needs to keep working on her weaknesses and adapt as a player not only physically and technically but will also have to take care of the mental aspects," Gopichand said.

"She has been training well and worked hard after her loss in All England, we made a few changes. She needs to go back, evolve and add variety to her repertoire of strokes," Gopichand said.

Asked about the match, the 2001 All England Champion said Saina brought variety in her game and started off on a positive note.

"She started off well, had a good lead and played a lot of shots, like drops. She added variety which was previously missing and in the end Saina was able to push the pace and win the first game 21-19," he said.

"In the second game as well, initially she did well, but she lost a bit, Shixian hit good strokes and made it 11-8 but after that Saina took control of the game and made it 14-all, Saina pushed the pace and rallied and forced Shixian to make error in the long rally," he added.