In college football, unlike any other major American sport, seasons are won and lost in a single game. It's the beauty and the curse of the game.
Lose, and your chances of winning a national championship plummet. Lose twice and forget it. In 2007 LSU became the first and only team in history to win a championship with more than one loss—don't bet on that happening again anytime soon.
Entering Week 6 of the season, 15 teams remain undefeated, but it won't be long before that number dwindles down to a handful. By the end of the regular season, history dictates we'll be lucky to see more than three contenders with unblemished records.
We have to go back to Auburn in 2004 to find the last undefeated team from a major conference that didn't play in the national championship.
So let's take a look at this 2011 field and start whittling away predictions for the next loss of every team from the major conferences, as well as a few notables from the mid-majors.