Greatness is defined in so many different ways. Statistical production, individual awards, team success, longevity, supporting cast, raw talent and athletic ability all factor heavily in determining overall greatness. Sometimes, you simply know greatness when you see it.

So all factors were considered when trying to determine who the greatest quarterbacks of the BCS era have been. Here are the Top 50 signal callers since the BCS was implemented in 1998:

* - active, ** - not all seasons played in BCS era

With spring practice underway across college football, most of interest will focus on quarterback battles or incoming freshmen that enrolled early to get a jumpstart on making an impact for 2013.

Heisman Trophy trends finally appear to be changing. Defensive players are getting invited to New York City with increased regularity as one player from that side of the ball has been a finalist in three of the last four seasons. The age stigma has fallen by the wayside as well with Tim Tebow and Johnny Manziel each winning the award in just their second seasons on campus.

With spring practice underway for many college football teams, the countdown to the 2013 season has officially started. With preseason predictions right around the corner, it’s never too early to start thinking about which players might be the next breakout stars.

With spring practice underway for many college football teams, the countdown to the 2013 season has officially started. With preseason predictions right around the corner, it’s never too early to start thinking about which players might be the next breakout stars.

Each year a unique set of prospects enters the professional ranks with a chance to make an immediate impact on the country's most powerful sport. The 2013 NFL Draft, held April 25-27, won’t be any different. Georgia's Jarvis Jones leads a fairly deep class of athletic defenders who should be capable of contributing on the next level.

Each year a unique set of prospects enters the professional ranks with a chance to make an immediate impact on the country's most powerful sport. The 2013 NFL Draft, held April 25-27, won’t be any different. The best inside linebacker prospect might be the most covered, most scrutinized prospect in the entire draft. Manti Te'o heads a class that isn't all that deep but has some elite playmakers at the top of the board.

Each year a unique set of prospects enters the professional ranks with a chance to make an immediate impact on the country's most powerful sport. The 2013 NFL Draft, held April 25-27, won’t be any different. The nose tackle position is a rare commodity that is highly coveted by every NFL franchise. And the 2013 class features a deep collection of elite prospects at the top of the rankings. However, after the top ten names are called, there could be a severe drop off in talent. Look for teams to go early on defensive tackles.

Thanks to seven consecutive national championships, the rest of college football is looking up at the SEC. And while there are some worthy challengers ready to make a push in 2013, there appears to be no end in sight to the SEC’s recent string of dominance.

For the second year in a row, Mark Richt's Bulldogs came up just shy of an SEC championship. This time, Georgia missed a chance at the national title game by just five yards. Yet, the 2013 team will look dramatically different than the last two SEC East champs.