Career
They had a bye in the first round, then were defeated in the round of 16 by Fu Haifeng and Cai Yun of China. They were defeated in the round of 32 by Robert Blair and Natalie Munt of Great Britain. Ohtsuka played at the 2007 BWF World Championships in men"s doubles with Keita Masuda, and were defeated in the third round by the eventual champions Markis Kido and Hendra Setiawan, of Indonesia, 22-20, 21-19.