Boxingtalk was informed by Sergio Mora this evening that he has received and signed his contract on Friday to fight former 154-pound champion Kassim Ouma.  Mora informed Boxingtalk that is getting things in motion for the scheduled September 15, 2007 showdown. According to Mora, the fight will be at the MGM Grand in Las Vegas, Nevada, and Mora also informed us that Ouma will be returning to the 160 pound division for this fight, the same weight at which he lost a title shot against world champion Jermain Taylor.