Keita Saito

Saitō joined J3 League club Fukushima United FC in 2015. On 8 November 2015, he netted a hat-trick, the first of his career, in a 3–0 win over J.League U-22 Selection. On 18 December 2015, he moved to J2 League club Roasso Kumamoto. He scored on his league debut against Tokushima Vortis on 6 March 2016, scoring in the 83rd minute. On 13 July 2019, Saitō joined AC Nagano Parceiro on loan. On 8 January 2020, Saitō was announced at Blaublitz Akita. On 17 April 2023, the club announced he was diagnosed with a right hamstring strain and would be out for the next 12 weeks. On 28 June 2023, Saitō scored against Shimizu S-Pulse in the 49th minute, which was Blaublitz Akita's 400th goal in the J League. On 20 December 2023, Saitō was announced at Fagiano Okayama. He made his league debut against Tochigi SC on 25 February 2024. Saitō scored his first league goal against Ehime on 7 April 2024, scoring in the 92nd minute.

Whilst at Yamashita Junior High School, the coach of the football team rarely came to coach, so Saitō made the practice menu and provided attacking and defensive coaching for his team.

Blaublitz Akita J3 League (1): 2020