World Series of Fighting (Central America) formerly Omega MMA is a Nicaraguan Mixed Martial Arts promotion based out of Managua, Nicaragua. The promotion made its debut on May 3, 2013. In the Summer of 2013, Omega MMA was quietly purchased by WSOF, and was rebranded as World Series of Fighting: Central America. The promotion held its first event on July 27, 2013, headlined by former boxing world champion Ricardo Mayorga.