Genki Sudo
After the match between Royler Gracie and Genki Sudo in 2004, the latter challenged Rickson. Producer Sadaharu Tanikawa tried to put together a bout between both, but he was unsuccessful. Three years later, after Kazushi Sakuraba defeated Masakatsu Funaki, Tanikawa also tried to promote a bout between Sakuraba and Rickson in 2008, with the same results.