Ryan Clady, Jason Peters, honestly, too many to list. Tyron Smith started as a RT.
Robinson didn't start playing the offensive line, until his junior year at high school. He played two years in college, in a very simple gimmicky offense. Snead drafts for upside, and it's something that we keep seeing. The 3rd year is the year. Robinson had foot surgery in the offseason, so all this improvement in fundamentals everyone keeps mentioning, couldn't happen in the offseason.
Next year will be his year, but he's not as bad as everyone is saying, or he'd have a TE on top of him, or a RB on his side, on every passing play.
That's all I'll say. Kind of getting tired of it.