Preseason prognosticators like Athlon Sports — the most accurate college football preview magazine on the stand — use many things to attempt to predict what the coming football season will look like. Returning starters, scheduling, historic trends, coaching, pending off the field issues and, of course, recruiting rankings all help Athlon editors predict the future of college football.

College football’s coaching carousel was in full effect this offseason. Thirty programs will have a new head coach in 2013, ranging from Arkansas, Auburn, Kentucky and Tennessee in the SEC to FBS newcomer Georgia State in the Sun Belt.

Recruiting is reaching a fever pitch as the college football machine churns toward National Signing Day 2013. The first Wednesday in February is the NCAA’s version of Christmas morning for fans and coaches alike. Great coaching is the key to winning, but so are great players. If your team has better athletes, generally speaking, it will win the game more often than not.

That doesn’t mean that every five-star is an All-American or every two-star is a Sun Belt third stringer.

Recruiting rankings are an inexact science, and even the experts will admit that. It is virtually impossible to measure heart, work ethic, mental focus and self-awareness in 17- and 18-year-old kids. Especially, in the face of the most important decision they will ever make.

The BCS just put a bow on its 15th season of action and Athlon has dissected the numbers and reviewed the tapes of all six BCS conferences in order to rank the best each league has had to offer. Which Oklahoma team was the best of the decade? Which Florida team was the toughest to stop? How do you rank the Florida State teams of the late '90s? Which Miami team was the best? How about those loaded USC teams? Alabama vs. Auburn?

The debates will rage on for decades, but here is Athlon's two cents. Here are the Top 10 ACC teams of the BCS Era (1998-present):

The start of spring practice is still over a month away, but college football coaches have already turned the page from 2012 to 2013. With the passing of the NFL Draft deadline and new recruits coming in after Signing Day, coaches have a good idea about their roster and some of the holes facing their team.

The top prospects of the 2007 signing class was a cautionary tale of sorts.

USC was the big winner on National Signing Day that year as the Trojans claiming four of the top 10 prospects in one of the final classes of Pete Carroll’s tenure. The top prospects, though, didn’t pan out. Of Everson Griffen, Joe McKnight, Chris Galippo and Marc Tyler, none of USC’s top four prospects made first-team all-conference.

The phrase “SEC Speed” instantly conjures images of glory, victory and pride for one region in the country and thoughts of depression, agony and exasperation for every other part of the nation. But after claiming their seventh national championship in a row, the SEC has a right to claim the best programs, players and coaches.

But why is that?

The early entry deadline to the NFL Draft is always a nervous time for many coaches in college football. Even though most coaches have an idea of which players will be back for the next season, there’s always a few surprises. And of course, it’s never easy to replace a potential first-round pick with an unproven player.

With 21 wins from 2011-12, Clemson is coming off the best two-year stretch in school history. The Tigers will have a chance to earn their third consecutive season of double-digit victories in 2013, as quarterback Tajh Boyd turned down a chance to enter the NFL Draft for another year in Death Valley. Receiver DeAndre Hopkins did leave for the next level, but Sammy Watkins should regain his freshman form in 2013.