India's rising shuttler Kidambi Srikanth climbed up five places, to a career-best No. 13, in the men's singles rankings. In the women's singles, P V. Saina Nehwal retains her No. 8 place in the rankings. Reigning Olympic champion Li Xuerui of China continues to figure at the top of the women's singles list.Parupalli Kashyap managed to maintain his number 21 position in the men's list, which is headed by Malaysia's Lee Chong Wei.The rankings were released by the Badminton World Federation (BWF) today.