Trying to rank college football's top NFL prospects before the regular season even starts can certainly be an awfully tricky task.
If you want proof of that, then just go back and look at many of the preseason prospect rankings from last summer.
At this time last year, many analysts and fans were busy pumping up players such as DE Quinton Coples, LB Vontaze Burfict and DT Jared Crick, while paying relatively no attention to eventual first-round picks such as DT Fletcher Cox, DE Shea McClellin and WR A.J. Jenkins.
It just goes to show that scouting young college football players is certainly anything but an exact science.
Now, with the start of the 2012 season inching closer and closer, it's time to begin figuring out who the top prospects for next year's NFL draft will be.
USC QB Matt Barkley will start off as the face of the 2013 draft class, and he's already being widely projected to be the eventual No. 1 overall pick. While Barkley clearly has the look of an elite pro prospect, he's definitely not the only player that scouts will be paying close attention to this season.
Here's an early preseason look at how college football's top eligible pro prospects stack up at each position for the 2013 NFL draft.