Can you experts who've watched the O-line play in detail give some thoughts on how the underclassmen are doing and how the O-line will look next year?

Seems to me that we return a lot of overall talent and will add a decent crew of guys who will play their first year next year (recruits, redshirts, etc).  I'm thinking that we'll be pretty good with the O-line being the one question mark given that we'll lose a few guyst there.  We'll be as good as the O-line allows