Japanese judoka, <a href="https://en.wikipedia.org/wiki/Toshir%C5%8D_Daigo" class="extiw" title="en:Toshirō Daigo">Toshirō Daigo</a>(left) and <a href="https://en.wikipedia.org/wiki/Yoshihiko_Yoshimatsu" class="extiw" title="en:Yoshihiko Yoshimatsu">Yoshihiko Yoshimatsu</a>(right), at the ceremony of <a href="https://en.wikipedia.org/wiki/All-Japan_Judo_Championships" class="extiw" title="en:All-Japan Judo Championships">All-Japan Judo Championships</a> in <a href="https://en.wikipedia.org/wiki/1951" class="extiw" title="en:1951">1951</a>.
<a href="https://en.wikipedia.org/wiki/Kodokan" class="extiw" title="en:Kodokan">Kodokan</a>
The Japanese book 『柔道』（2013年1月号）