New Delhi, Sept. 11 -- Indian badminton ace P V Sindhu says she will be marked by opponents after her World Championships Gold and would need to constantly discover "new things" in her game to maintain her stranglehold on international badminton.

Olympic Silver medallist Sindhu became the first Indian to win a historic World Championships Gold medal after thrashing Japan's Nozomi Okuhara 21-7, 21-7 in a lop-sided final at Basel, Switzerland last month.

Asked about the challenges that she will face from now on, Sindhu, who boasts of two Silver and as many Bronze in the World Championships, said: "Pressure and responsibility will now be more. I know everybody will mark me now after the World Championship.

"Now I have to really work harde...