Calzaghe on points. Even though Tarver was the natural light heavyweight he was hyped up for beating a past it Roy Jones.
Hard to say. You'd probably have to fancy Joe on workrate, but we never saw him fight a fellow top level southpaw in his career.
I like Joe in this one although I think Tarver has some counterpunching success. I think this would be a very tactical fight with Joe not throwing his usual blazing combos because of Tarver's counterpunching ability but using his superior movement to a very cautious decision win.