How hurtful was Amir Khan's loss to Prescott?

Hopefully Prescott makes something of himself and they can rematch later, avenging this loss is paramount.

 

It came pretty early to do less damage than on the highest level. Of course it revealed for all that his chin is very suspect, although who's in amateur boxing knew his chin's reputation... This wasn't Khan's first knockout loss (unlike Hatton's or Cotto's) so he knew how to deal with it.

Mental damage? Khan looked better than ever just 2,5 month later, and of course he didn't take a 12 round beating or got knocked out cold vs Prescott, therefore the damage is a loss in the record and another proof, that he his a very weak chin, but pretty much that's it... now he's training in the US, no additional pressure on the undefeated record (demand was based on Hamed's undefeated run), more focus on defense.