The sports world is still buzzing about this week's retail release of THQ's UFC 2009: Undisputed. It showed that the sport of mixed-martial arts isn't as hard to capture within a video game as once thought. The striking is highly entertaining, the animations are fluid, and with so much going on behind the scenes for UFC 2009's exciting combat, the MMA world can now celebrate that it has its hit video game. Having said all of that, fans of MMA are still yearning for more fighters to play with. Already featuring over 80 plus fighters, there are a few notable fighters that are missing from the UFC 2009 roster that need to be considered for downloadable content in the future. The typical demand of including Randy Couture has been said all over the net, so PlanetXbox360.com chose 10 other fighters that would be exciting must-have additions to the next game in the franchise.