Shawn Porter's will to push forward made him the glue guy at 147

Shawn Porter has been the glue of the welterweight division for quite a while. Why? He's never one to back down from a fight.

source https://www.espn.com/boxing/story/_/id/32638641/terence-crawford-shawn-porter-shawn-porter-push-forward-made-glue-guy-147