Chad Dawson defeated Glen Johnson decisively in their rematch tonight. (Photo via images.sportinglife.com) View full size photo » In the main event of tonight's HBO World Championship Boxing, Chad Dawson routed Glen Johnson over 12 rounds in a rematch of their tight 2008 battle, leaving no doubts this time about the identity of the superior fighter. Dawson kept his undefeated record with arguably the best and most imp...