Johnny Manziel had one of the most impressive freshman seasons in the history of college football in 2012. After winning the Heisman Trophy and setting multiple school and conference records, the inevitable question that comes up is, how can he top this?
There are some legitimate concerns that Manziel will fail to improve on his inaugural season in college football. Some are worried that he will experience the "sophomore slump" that has befuddled many college athletes after a successful freshman campaign.
No freshman has ever won the Heisman Trophy and experienced the kind of national acclaim that Manziel has. It will be interesting to watch how he handles the success. This is a look at some areas of concern for Manziel going forward.