Jake Shields and Tim Sylvia will be in the main and co-main event for the December 3 edition of Submission Underground 6.
The event takes place from Portland and airs live on FloGrapling.
Sylvia, a former UFC heavyweight champion, meets Fabiano Scherner in the co-main event. Scherner is a multi-time jiu-jitsu gold medalist.
Other bouts include AJ Agazarm vs. Nathan Orchard, David Mitchell vs. Anthony Smith and Vagner Rocha vs. Jesse Taylor.