佐藤光留
In 2004 Shannon drew interest from Pancrase after his wins over future The Ultimate Fighter cast members Ray Elbe and Eddy Ellis that same year, his Pancrase debut would be against PRIDE and UFC veteran Yuki Kondo at Pancrase: Brave 6 in a losing effort. He would later take on professional wrestler and MMA journeyman Hikaru Sato at Pancrase 269, their inaugural event on UFC Fight Pass, in 2015 losing the fight. Despite these loses Ritch maintains a partnership with Pancrase occasionally appearing at the Pancrase Gym in Japan to host training seminars and even appearing in the Pancrase energy drink line.