13. Bobby Knight's Sweater

Debuted: 1971
Famed Appearance: On the sidelines, notably for Army and the Indiana Hoosiers

The General went into battle sans suit and tie like other college coaches in favor of a more understated and “ornery grandfather” look thanks to his vast sweater collection. Even as he's segued into a broadcasting career, where his peers once again dressed in a more formal fashion, the sweaters have remained for Coach K's mentor.