Originally written on Fox Sports South  |  Last updated 10/28/14

COLUMBIA, SC - OCTOBER 30: Head coach Derek Dooley of the Tennessee Volunteers watches on against the South Carolina Gamecocks during their game at Williams-Brice Stadium on October 30, 2010 in Columbia, South Carolina. (Photo by Streeter Lecka/Getty Images)
The four-year rule was never official. It was never written or codified in any meaningful way. It was just one of those understandings. A new college football coach needed some time to recruit and develop his players and reshape the culture of a program in his own image. The rule of thumb was always four years. By then seniors would have played every college down under one coachs leadership, and boosters would have a good idea what sort of man they had on their hands. Win in four or hit the door, was the saying back in the day. Now its Win in one or you might be done. That is a bit of an exaggeration, but no one doubts that the grace period for new coaches has grown precipitously shorter over the years. Derek Dooley is just the latest example. Forget the mess Dooley inherited after Lane Kiffins inglorious single season in Knoxville, and forget the facilities upgrades Tennessee needed in order for the Vols to compete in the high-stakes SEC recruiting wars (upgrades that were just completed this year). You can even forget the injuries that led to a disappointing sophomore season for the young head coach. Dooley didnt get the wins, so he was shown the door before the end of year three. Joker Phillips also lasted less than three at Kentucky. John L. Smith will in all likelihood be out at Arkansas in one, and at least one more SEC change is possible by seasons end. This year the average tenure of an SEC coach was 4.8 years with Mark Richt and Gary Pinkel skewing the average upward with 11-year stints at Georgia and Missouri. Next year, if nothing else changes, that average will drop to 4.6. That puts the SEC in the middle of the major conferences when it comes to coaching tenures. The Big 12 leads with an average of 8.5 years, but Mack Brown and Bob Stoops push that number northward. The Big East is the worst with an average tenure of only 2.4 years, while conferences like the ACC are one Frank Beamer retirement away from plummeting near the bottom of the pile. The reasons are simple. College football has become, in some cases, a nine-figure investment for athletic departments and the donors that keep them afloat. Head coaching salaries stretch upwards of 100 times the medium household income in the United States, which means that performance is expected much quicker than in the old days when the coach at Notre Dame couldnt make more than the college president, who was a priest. Now, Nick Sabans compensation package is worth 45 million over eight years. As long as Alabama wins championships, its worth it. But the moment the Tide falls below eight wins a season, you can bet that somebody is going to run the numbers. The other reason for the shortened working life of a head coach is the success others have had in a relatively short period of time. James Franklin will lead former cellar-dweller Vanderbilt to its second consecutive bowl game and could potentially give the Commodores their first nine-win season. Kevin Sumlin could win 11 in his debut at Texas A&M. And SEC rookie Hugh Freeze, while still one win away from bowl eligibility at Ole Miss, has injected enthusiasm and optimism into a program that had neither one short year ago. Whoever takes over at Tennessee will no doubt have a lot of support and a wonderful honeymoon. The same will be true at Kentucky and Arkansas. But if recently history is a guide, the good-feeling grace period wont last long. It rarely does. Wins are the only job security.
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