Floyd Mayweather remains the world's best pound for pound boxer after the biggest bout in recent boxing history. Mayweather beat opponent Manny Pacquiao in Las Vegas, meaning the boxer is now undefeated after 48 fights. It's believed to be the most profitable boxing match in history, netting a whooping $400 million. Kiwi boxing trainer Kevin Barry joins Mike Hosking from Las Vegas to discuss the bout.