Nigerian businessman Mike Adenuga has an estimated net worth of $10.9 billion as of June 2016, according to Forbes. Nicknamed "the Guru" in his native Nigeria, Adenuga debuts on Forbes billionaires list in 2011 after making waves with mobile technology, Nigeria's second-largest mobile telecom operator. He made his first million at age 26 selling lace and distributing soft drinks. His telecom carrier Globacom launched a 4G network, and he's invested $1 billion on a submarine cable connecting Nigeria to the rest of the world. He made his first million at age 26 selling lace and distributing Coca-Cola, then won a contract to build military barracks in the late 1980s. He owns a stake in the Equitorial Trust Bank and chairs Niger Delta oil exploration firm Conoil. Adenuga is a soccer devotee and sponsors a number of tournaments.