Riko Gunji (郡司 莉子, Gunji Riko; born 31 July 2002) is a Japanese badminton player who competes in women's singles. A…Riko Gunji (郡司 莉子, Gunji Riko; born 31 July 2002) is a Japanese badminton player who competes in women's singles. A member of the Japanese national team, she plays for the Kumamoto Saishunkan team and has reached a career-high world ranking of No. 18. She is the gold medalist at the 2019 BWF World Junior Championships in the girls' singles. She secured her maiden BWF World Tour title at the 2024 Indonesia Masters Super 100 and won her first Super 300 title at the 2026 Canada Open. In team competitions, she was a member of the Japanese squad that won gold at the 2020 Asia Team Championships and earned bronze medals at the 2022 and 2026 Uber Cup.
Ippei Kojima (小島 一平, Kojima Ippei; born 22 October 1944) is a Japanese retired badminton player who won a record eight…Ippei Kojima (小島 一平, Kojima Ippei; born 22 October 1944) is a Japanese retired badminton player who won a record eight Japanese national men's singles titles and some major international titles in both singles and doubles between the mid-1960s and the mid-1970s.
Mami Naito (内藤 真実, Naitō Mami; born 25 December 1986) is a Japanese badminton player from the Yonex team, who competed…Mami Naito (内藤 真実, Naitō Mami; born 25 December 1986) is a Japanese badminton player from the Yonex team, who competed at the 2014 Asian Games. She educated physical education at the Nippon Sport Science University, Tokyo. Her older brother, Yusuke Naito is a badminton coach. Naito and her women's doubles partner Shizuka Matsuo have reached the career high as world number 3 in the BWF World ranking.