Any coach who says he has made a mistake in evaluating a player is either in his 1st year or is a boldface liar! Talent, and the ability to use that talent in key game situations, is not always simple to see, regardless of your background. Good coaches always take time to look at many different facets before making their decisions...and even THAT isn't enough sometimes. All a coach can really do is do what he sees as right, and pray that he made the right call.