Former UFC heavyweight champions Junior Dos Santos and Fabricio Werdum squared off for the final time ahead of their main event fight at Gamebred Bareknuckle MMA – and they both appeared to be in great physical shape. Other UFC alumni present at the faceoffs, set to compete Saturday at VyStar Veterans Memorial Arena in Jacksonville, Fla., included Brandon Jenkins , Anthony Njokuani , Brandon Davis , Joshua Weems , Irwin Rivera , and Maki Pitolo . Of course, promoter Jorge Masvidal was on hand, too, as he squared off each pairing of fighters. The event will stream live and free on MMA Junkie.