Kevin Gemmell Starters in, starters out. That’s college football. Players’ eligibility expires, and they leave for the rest of their lives, whether that includes the NFL or not.And they leave behind shoes of various sizes that need to be filled.Our concern with this series? The biggest shoes -- in some cases Shaq-like size 23s.Biggest shoes: Center Brian SchwenkeLike yesterday's "Biggest Shoes" subject, Colorado offensive lineman David Bakhtiari, it's tough to really quantify what Schwenke meant to the team. Originally posted by ESPN.com - Pac-12 Blog Click here to view the article.