Japan took both gold medals on offer on the opening day of the judo world championships in Tashkent on Thursday, with Natsumi Tsunoda defending her women's 48-kilogram crown and Naohisa Takato winning the men's 60-kg title.The 30-year-old Tsunoda, who dropped down from 52-kg three years ago, overpowered Germany's Katharina Menz in the final at the Humo Ice Dome, wrapping up the title with five straight wins by ippon."I was really anxious until this morning," Tsunoda said. "I was worried, knowing my life could change in the course of a day, but I'm glad I could get the result."Tokyo Olympic …READ FULL ARTICLE