What happened to Dominic Guinn?

That's it. He just doesn't have what our British friends call "the bottle" for fighting.

 

He had too long an amateur career, which basically means he is burnt out. Most people's body and mind can only perform at a top level for a certain period of time.

 

grim reaper, i don't know if ur kidding but where did u read he got into a street fight with chris koval? guinn got knocked out by him?

 

This is pretty much it. Guinn was never a guy with vastly superior speed or power, but he was a talented boxer with good technique and the ability to put together well executed combos.

I think that after the Barrett loss he lost confidence in himself and simply didn't have the mental makeup to pull the trigger enough in the ring.

A fighter like Guinn must absolutely be willing to let his hands go in the trecnches in order to win bouts--he simply isn't going to knock guys out.

For some reason, Guinn lacks the discipline and mentality to maintain enough of a workrate to beat boxers that he should be beating.

No one has ever destroyed him, all of his losses have much been cases of being outworked: Barrett, Liakhovich, Toney (no idea what to do in that one), Thompson, Chambers, and Hawkins all outhustled him.