We've already seen a couple significant moves made in the time since the official start to free agency got underway, but by all indications we haven't seen anything yet as a number of free agents will be inking new deals during winter meetings.
With the free-agent market looking relatively thin in certain positions, teams will also inevitably seek out trades to improve their rosters.
On the flip side of the teams working hard to push towards the top of their divisions, there are sellers that are working to rebuild their franchises for future seasons.
Since repeating strong seasons is one of the hardest things for a franchise to accomplish, there's always the potential for regression.
Here are some teams that might find themselves coming up short of last season's effort in 2013.