One of the better welterweights. But the division is so deep in the UFC that he would have problems even getting a shot at the title, ot making a significant impact. Speaking of Hieron at the last Affliction show he scored a brutal KO on some guy. The other bloke was out cold. He definately has some pop in his punches. http://www.cagepotato.com/knockout-day-jay-hieron-vs-jason-high
That was in his UFC debut. A long time ago and he was relatively new to MMA. I don't think he could beat GSP, not what I'm saying. But they are both completely different fighters now.