The NFL Players Association is challenging the structure of the league's television contracts in a filing to Special Master Stephen Burbank of the University of Pennsylvania.
The NFLPA is arguing that the league essentially set up a 2011 lockout protection fund with the structure of its TV deals.
The union argues that the NFL's guaranteed $4 billion in television revenues combined with the elimination of $4.4 billion in player salaries would make 2011 a profitable season for the owners even if no football is played because of a lockout.
NFLPA Files Challenge To TV Deals