Widely considered the best African boxer ever, he was a three-time world champion in two different weight classes. He earned a yellow metal medal as an amateur in the 1978 Commonwealth Video games and proceeded to go 50-2 general as an amateur. His longtime trainer was wiped out in a vehicle accident in 1998, and Nelson under no circumstances won another battle later on. His wife passed away from tumor in the 1990s. He dropped a battle with lifelong rival Jeff Fenech in June, 2008.