Would Walker have been able to reverse the original outcome? I think the general consensus is that Walker became a better and stronger fighter as he matured as a middleweight. Taking the Greb who bested the welterweight Walker....against the Walker who took two decisions from Ace Hudkins...would it play out any differently? Would it be closer?
Greb beat him bad enough in the first matchup. I don't see any edges that Walker could've held that would play any part.