Wasn't Evans one of the 1st guys to develop the "sport's hernia" (not medical name)....deep abdominal injury, which caused him to miss a ton of time (almost the season)........then, after he returned, he was injured again, saw that he was never gonna be at the DI level again, so went to a smaller school.....
Please correct me if I am wrong, but I think that I may be correct (doesn't happen much

)
So, again, IMO you can not put Evans into this category.
Would anyone consider Bobby Newcombe as a "minor" bust? He was very highly touted at QB, and then couldn't win the starting job and played a fairly prominant role at WR. I like Bobby, and he was important to our Big 12 Title, but he never panned out as the next Tommie.