Here's some good information, courtesy of Gracie Magazine:
Sengoku announced today more details on the event scheduled for September 28. Making his debut in MMA, Xande Ribeiro will take on Japan’s Takashi Sugiura. Despite not being very experienced (only three MMA bouts), Sugiura can brag about the fact that he fought twice at Pride FC.
Interestingly enough, both these fights were against Brazilian athletes. At Pride 21, in June 2002, he was defeated by Daniel Gracie in a split decision. But at Bushido 4, in July 2004, he beat Paulo Cesar “Giant” Silva by technical knockout.
Check out the updated card and stay tuned for more on Sengoku 5.
Ryan Schultz vs Jorge Masvidal
Yuki Sasaki vs Yuki Kondo*
Siyar Bahadurzada vs Evangelista "Cyborg" Santos*
Logan Clark vs Jorge Santiago*
Paul Cahoon vs Kazuhiro Nakamura*
Roger Gracie vs t.b.a.
Xande Ribeiro vs Takashi Sugiura
* Middleweight Grand Prix fights