There are a myriad of reasons why a quarterback may be successful in college yet not the NFL . Over the past couple of decades, the first round has been littered with players who couldn't hack it in the league for one reason or another. If I had to boil down the difference between playing quarterback in college vs. the NFL that leads to the most downfalls, it would have to be the speed of the respective games.

While saying "speed of the game" is a common refrain from analysts, it's always conjured up images in my head of defenders just running faster. While that's obviously part of it, it's the downstream effects on the quarterback position that I'm more referring to when I use the phrase.

In the NFL, pass-rushers get home faster, receivers separate less and holes in zones close quicke

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