This document discusses teams that had winless preseasons but still found success in the regular season. It provides examples from 2007-2009 of teams like the Colts, Bears, Cardinals, and Patriots that went 0-4 in the preseason but made the playoffs. While a winless preseason can be a concern, it does not always predict how a team will perform once the regular season begins. About 33% of teams with winless preseasons still had winning records that regular season.