Not sure I agree about Marpet,Yardie. It isn't just that he's some cinderella story from a D III school, he has the tools.
Looking at the numbers, sub 5 40, 1.71 10 yard split, 7.33 cone drill, 4.47 shuttle, 30 bench reps, he could be the most athletic interior OL available. Guys can get stronger, but its tough to teach athleticism. In his case, he's already pretty strong.
Those numbers aren't classified as "freakish", but they are at least, "exceptional". They compare favorably to guys like Zack Martin and Sua'-Filo last year.
As far as the level of competition, if he had looked lost during the Senior Bowl practices, I'd agree with you. But he fit right in.
As far as finding a more "plug and play" guy for the position, its becoming more easily said than done, especially in recent years. Its one of the reasons I'm a skeptical of the "we'll get our guy in the draft and he'll move right in" mantra. For many teams, it isn't happening, and that includes top prospects from the biggest schools.
The list of elite Olinemen who struggled their first year or two is pretty long:
Lane Johnson;
Kalil;
Chance Warmack;
Jonathan Cooper (even after his rookie injury);
Su'a - Filo;
Eric Fisher (ok..small school);
Jake Matthews;
Anyone from Alabama not named Fluker.
The Zack Martin's are showing to be more of the exception than the rule.
As far as getting him up to snuff on NFL competition...I can't think of a better way to get him there than going against Dareus and Kyle Williams in practice. Talk about being thrown into the fire.
Anyway...a good write up on him from MMQB
http://mmqb.si.com/2015/04/02/nfl-dr...marpet-hobart/
He's garnered the attention from a number of teams, he had lots of visits at the Combine, I doubt he makes it til the 3rd round.