Claim: Keita Obara won against Yuki Nagano on Feb 1, 2020 in Korakuen Hall, Tokyo, Japan with a record of 23–4–1.
Evidence: Japan Korakuen Hall, Tokyo, Japan 1 Feb 2020 Japan Yuki Nagano 23–4–1 
He bounced back from defeat with stoppage wins against Yosmar Kefi in June and Toshiro Tarumi in October, before defeating Yuki Nagano on 1 February 2020 at the Korakuen Hall to capture the Japanese welterweight title. Japan Korakuen Hall, Tokyo, Japan 23–4–1