Star Indian shuttler Saina Nehwal regained the number one spot in the latest BWF world rankings released .Saina secured the numero uno spot for the first time early last month. But she slipped from the coveted position subsequently. The Olympic bronze medallist, however, climbed to the number one ranking once again ahead of the Australian Open, starting on May 26. Defending champion in the Australian Open Super Series, Saina would be taking on a qualifier in her campaign opener. Meanwhile, P V Sindhu lost a position to be on 12th place in the Rankings. In men's singles, K Srikanth has retained his fourth place. P Kashyap maintained his 13th place and H S Parnnoy also held on to his 15th spot.