Shinnosuke Oka

Junior

Oka competed at the 2018 Junior Asian Championships where the Japanese team won the silver medal behind China. Individually, he won the all-around bronze medal behind Shi Cong and Yin Dehang.^[4] Then in the event finals, he won the gold medal on the horizontal bar and the silver medals on the floor exercise and parallel bars, and the bronze medal on the still rings.^[5]

Oka won two gold medals, one silver medal and one bronze medal at the 2019 Junior World Championships held in Győr, Hungary. On the first day, he won the gold medal both in the team and individual all-around events.^[6][7] Then in the first day of event finals, he won the silver medal on the pommel horse behind teammate Takeru Kitazono.^[8][9] Then on the final day, he won the bronze medal in the parallel bars behind Kitazono and China's Yang Haonan.^[10][11] He then placed eighth all-around at the 2019 All-Japan Junior Championships.^[12] At the 2020 All-Japan Championships, he finished 44th in the all-around.^[13]

Pommel horse

Parallel bars

Horizontal bar

Oka at the 2019 Junior World Championships

Senior

Oka placed 60th in the all-around at the 2021 All-Japan Championships.^[14] He tore his right ACL at the 2022 All-Japan Championships.^[15]

Oka returned to competition at the 2023 All-Japan Championships and placed 10th in the all-around.^[16] He then finished 11th in the all-around at the NHK Trophy.^[17] Then at the 2023 All-Japan Event Championships, he won a bronze medal on the floor exercise.^[18] Oka won the all-around title at the 2023 Asian Championships in an upset over Carlos Yulo.^[19][20] The Japanese team won the silver medal behind China.^[21] In the event finals, Oka won silver medals on the parallel bars and the horizontal bar.^[22]

Oka began the 2024 season at the All-Japan Championships where he won the all-around silver medal behind Daiki Hashimoto.^[23] He then won the all-around title at the 2024 NHK Trophy and earned a place on Japan's 2024 Olympic team^[15] alongside Hashimoto, Kazuma Kaya, Takaaki Sugino, and Wataru Tanigawa.^[24][25] At the Olympic Games the Japanese team won the team gold on July 29, defeating long-time rival China.^[25] Oka went on to win gold medals in the individual all-around and horizontal bar, as well as a bronze medal in the parallel bars.^[26]

Oka competed at the 2025 Asian Championships where he helped Japan win gold as a team. Individually he also won gold in the all-around and on the parallel bars.^[27] Later in the summer he competed at the 2025 World University Games where he once again helped Japan win team gold. Individually he won two silver medals on floor exercise and parallel bars and placed sixth on horizontal bar.^[28]