College football's top 10 QBs

Teddy Bridgewater, Marcus Mariota and Jameis Winston are part of a stellar 2013 QB class. Getty Images

As we reach the halfway point of the season, the 2013 quarterback class continues to add to its lofty credentials.

Games in which QBs throw for 400 yards and contests in which signal-callers pass for 300 yards while rushing for 100 yards are becoming commonplace. Plus, the wins continue to pile up, as the combined record of our latest top 10 QBs (below) features just three total losses.

In addition to some reshuffling at the top following last month's ranking, a high-profile newcomer joins the list near the bottom. Overall, the SEC, Pac-12 and ACC continue to dominate the rankings. And regardless of which conferences are most represented, the 2013 QB class is getting stronger and deeper, much to the delight of NFL quarterback-hungry franchises and fan bases.

To recap, I rank the top 10 quarterbacks in the country based on two factors:

1. Productivity at the collegiate level.
2. Pro skills.

For each category, I rate the passers on a 1 to 10 scale.

The latter factor is important not just for each QB's chance to make it in the NFL, but also because quarterbacks who are capable of stretching and challenging a defense with pro-caliber throwing ability provide value to their teams' offenses that QBs with limited passing ability simply cannot.

As we head into the second half of the season, here are the top 10 quarterbacks in college football:

1. Teddy Bridgewater, Louisville Cardinals

College production: 9.5
NFL skills: 10
Previous rank: 1