I think he did enough against Hopkins to get the decission. Although Hopkins doesn't make the best of opponents.
I don't think he should retire until he fights our very own Carl Froch. Calzaghe might make short work of him, who knows? However, Carl is British champion etc & No1 contender for the WBC belt. I'd lose alot of respect if Joe decided to vacate the title. For once the City Ground would be packed to the rafters for this one
