Gegard Mousasi has won two straight in the Octagon. | Dave Mandel/Sherdog.com
A middleweight showdown between Gegard Mousasi and Roan Carneiro is official for the UFC Fight Night "Barnett vs. Nelson" co-main event.
The Las Vegas-based promotion recently confirmed the matchup. In addition,Jingliang Li meets Kiichi Kunimoto at welterweight, while Norifumi Yamamoto takes on Matt Hobar at 135 pounds. Recent flyweight title challenger Kyoji Horiguchi is also expected to compete at the event, with his opponent to be announced at a later date.