Can Golovkin and Rigondeaux become huge draws like Floyd Mayweather Jr?

By Gerardo Granados: Last Saturday night we all got the chance to see a beautiful knockout, a left hook to the body that was brilliantly prepared and executed by WBA middleweight champion Gennady Golovkin (27-0, 24 KO's) in knocking out Matthew Macklin. Oh, the drama of the fallen contender screaming in pain was something to