Can UFC fighters fight outside the cage?
yes they fight at pride sometimes
Actually No. Lesnar has lost 3 of his 7 fights in the UFC. His losses were against the following 3 fighters: a. Frank Mir - His first fight in the UFC b. Cain Velasquez - Lost the UFC Heavyweight Title c. Alistair Overeem - Retired after this fight He also won 4 fights in the UFC including his win against Randy Couture which made him the UFC Heavyweight Champion.
Both Pride and UFC are MMA promotions that organize events where fighters fight one another in MMA bouts. UFC is a much larger promotion in terms of size, value ($$) and number of fighters. Pride is much smaller and is usually the promotion where talented fighters start their careers. As they win matches and build reputation, they move over to larger organizations like UFC.
Anderson Silva is next scheduled to fight at UFC 168 in Dec 2013. The fight is expected to be the rematch with Chris Weidman for the UFC Middle weight title that he lost in July 2013 at the UFC 162 event. The fight will be hard hitting and is expected to be a blockbuster encounter between two top fighters