Refers to the gambling case of the Japanese badminton team in the first half of this year. 19 In April, the Japanese Badminton Association ended its investigation of 106 and announced that 9 people were involved in illegal gambling in underground casinos. Kento Momota, a Japanese badminton elder brother, and his predecessor Kenichi Tanaka were involved in illegal gambling in Japan, so they missed the Rio Olympic Games. Japan's 2 1 year-old Nishimoto Shandan, ranked 43rd in the world, was also found to be involved in illegal gambling, and was expelled from the Japanese national team like the first two.

Kento Momota and Kenichi Wada are the main players in Japanese badminton men's singles. Kenichi Tanaka was born in 1989. He won the runner-up in men's singles at the All England Badminton Open and won the 20 14 Thomas Cup with his teammates. Kento Momota was born in 1994, and has a strong upward trend in recent two years. Last year, he won the men's singles championship in Singapore Badminton Super Championship, Indonesia Super Championship and Badminton Federation Finals. Chen Long lost to his opponent in the semi-final of the World Championships last year, becoming the first player in Japanese history to win the bronze medal in the men's singles event of the World Championships.