GGG is the number 1 contender. But Cotto claim to being the true champ goes back to Hopkins unifying all the titles, then Taylor - Pavlik - Martinez and now Cotto.
Golovkin is the best MW in the world. Cotto is the lineal MW champion of the world. The first is transient. The second is history. I hope Cotto does the right thing and fights GGG.
Cotto-GGG, let's get it on and throw Alvarez into the mix for the winner. The MW division could have some huge fights depending on how Top Rank go about it.
