Things don't always click right away for NFL rookies.
Sure, we've seen plenty of players have instant success in an NFL that is increasingly incorporating college football principles into its schemes and game plans, but the increased speed of the game can still create a learning curve.
Thankfully, most draft picks have a grace period of a year or two to get their bearings before coaches and general managers start impatiently checking their watches as they wait for these players to come around.
There are a number of circumstances that could result in last year's rookies becoming this year's breakout candidates. Perhaps a starter left the team, opening up an opportunity for an increased workload. Maybe a new coach introduces a scheme that is a better fit for a specific player's talents. Sometimes, a player starts slow but finishes strong and sets up a scenario where his solid play could carry over.
Some of these 2012 rookies played well and others struggled, but either way, these are some potential breakout players to keep your eye on as the 2013 season approaches.