Ranking the top 10 QB prospects in 2015 NFL draft

With the 2015 NFL Scouting Combine upon us, it is time to rank the top 10 QB prospects in the 2015 NFL draft class. It is truly a down year at the position.

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Had any of the following quarterbacks left school a year early, they'd be legitimately battling for the third spot: Connor Cook, Cody Kessler, Dak Prescott and Trevone Boykin, not to mention the three-game wonder kid Cardale Jones -- who amazingly led Ohio State to the national championship in just his third career start.

Those passers should allow us to get excited about the 2016 quarterback class. It unfortunately leaves us quite disappointed with the 2015 class.

It is two-deep, and then a whole bunch of question marks.

The aim of every scout is to wade through all the question marks and unfurl a gem, should one be found.

One potential gem was Nick Marshall -- the Auburn quarterback, who is a tremendous athlete and underrated passer, but decided to switch to cornerback at the 2015 Senior Bowl. Had Cam Newton's successor at Auburn maintained his spot in this draft as a passer, he would have been one of the top-five prospects at the position.

That fact probably says everything about this class. After the two Heisman Trophy winners -- Jameis Winston and Marcus Mariota -- it brings a ton of unknowns.

Still, there are 10 quarterbacks worthy of being ranked, if not drafted. These 10, at least, deserve a spot in an NFL training camp this upcoming summer.

Though I did my own charting of game film, for sake of clarity I used this accuracy chart from Darren Page. Obviously his charts only take into consideration accuracy so they are not the sole factor in these rankings. Hence, why some of the quarterbacks are ranked differently than they fall in his charting.

Accuracy is one of the main tools I use to evaluate quarterbacks, but it does not stand alone. Poise, moxie, pocket mobility, ability to throw from different platforms and with different trajectories are also keys I look for when evaluating quarterbacks to the NFL level.

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Related links:
Roy Williams calls out North Carolina fans
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Cleveland Browns new logo leaked at combine?

For more sports coverage, please visit FanSided.com and follow W. Osgood on Twitter: @willosgood116