Ace Indian shuttler Saina Nehwal has regained the world number one ranking after China's Li Xuerui dropped a couple of rungs to third in the latest list issued today. Saina, the first Indian woman shuttler to be world number one after her India Open triumph earlier this month, had dropped to the second place following her semifinal finish in the Malaysia Open. She skipped last week's Singapore Open, but gained in the rankings after Xuerui also pulled out from the tournament.PV Sindhu dropped out of the top 10 and was placed 12th after slipping three spots. In the Men's section, Srikanth K. retained the fourth spot, while P. Kashyap rose a rung to 14th owing to his semifinal finish in the Singapore Open.