Drafting Underclassmen vs Seniors

http://www.cbssports.com/nfl/draft/story/11540378

Since 1991, rookie seniors selected in the first round played 13.5 games on average, with 8.1 starts. In that same time, underclassmen more than held their own in those categories with 12.9 games played and eight starts.

I found this article quite interesting. Worth a read.