Role players and depth defensemen are going to be the biggest currency of the day Wednesday when the 2015 NHL free agent market opens.
A big reason for that is most of the impact players who could be free agents have already signed new contracts with their current employers. Players in the free agent class of 2016 can begin signing extensions Wednesday, so it's time to take a look at the biggest names who can become unrestricted and restricted free agents a year from now.
There are plenty of impact players on these two lists, and any number of them signing a new contract could end up being the biggest news of the day and have the greatest lasting impact on a franchise.