Without many regulations and its dynamics changing from era to era, boxing is arguably the most difficult sport in which to measure greatness. But here goes.
The 23-year-old Mexican singer has taken over the entire world recently - he s collaborated with some of the biggest musicians on the globe and he s broken numerous records on the Billboard charts.
Ricky Hatton has denied snorting cocaine after footage showed him on the way to Manchester with white powder on his nose - insisting it is a legal tobacco product.