National teams Under–21 In 2015, Watanabe made his debut for the
Japan under–21 side at the
Junior Asia Cup. The team finished fourth, qualifying for the Junior World Cup. Following the Junior Asia Cup, Watanabe represented the side again at the
2016 Junior World Cup in
Lucknow, India, where the team finished in thirteenth place.
Senior national team Kota Watanabe made his senior international debut in 2016 at the
Sultan Azlan Shah Cup in
Ipoh, where the team came last. Following his debut in 2016, Watanabe has been a regular inclusion in the Japanese team. His most prominent performance came in the 2018, at the
Asian Games in
Jakarta.
Adelaide Fire In 2019, Watanabe was signed to the
Adelaide Fire hockey team to compete in the
inaugural tournament of the
Sultana Bran Hockey One League, Australia's new premier domestic competition. ==References==