The Dallas Cowboys grievances were heard against the NFL after being penalized $10 million in salary-cap space for the 2012 season due to the league determining that the Cowboys exploited the uncapped year in 2011, along with the Washington Redskins, who were penalized even more ($36 million).
The NFL is arguing that the grievance is invalid because the player's union agreed to the cap penalties. Another argument the league is using, which is far more reaching and far more alarming for every team around the NFL, is that the Commissioner has the "full and complete" ability to to adopt any measures that ensure competitive balance.
That's probably a good thing for team executives and general managers to know, while they're out there wasting time trying to make sure a respective team is competitive.
Little did any of us know, Roger Goodell has the power to do all of that. Great.
Read more about the Cowboys at Blogging the Boys.