Boxing is a way of life in Bukom, a neighbourhood in downtown Accra, Ghana. An overwhelming percentage of Africa's title-fight-winning boxers come from this relatively small community by the sea. Kids learn to fight in the street - often barefoot - as youngsters, with the promise of joining a larger gym, finding a professional coach and one day even fighting in the Olympics. For 12-year-old Michael Decardi Nelson - aka Ghana Mayweather - it's a chance to impress scouts and possibly join a gym in America. If he can win the junior city championships.