Antonio Brown, everyone missed on him, largely due to him playing QB in HS and having grade (and character?) issues out of HS - he tried to enroll at FSU but couldnt, so he went the prep route. He received a scholarship within the first week of arrival at CMU - his talent was pretty obvious but again there were some lingering issues. JJ Watt walked on at Wisky because it was his dream to play there, he had a scholarship from CMU out of HS (where as we know, Butch made him a TE). Jordy Nelson...considering his family owned a 40,000 acre farm and he played DB/QB in a weak division at a small school in kansas, I think it's same to say his family was pretty well off, so the walk on park wasnt that surprising. Moss got a track scholarship at the U, then Butch Davis convinced him to play football - a bit different than being an actual walk-on...