NFL players who sued the league for alleged antitrust violations liken the league to a "cartel" in their latest court filing. They are again urging an appeals court to lift the lockout. In arguments filed in the 8th U.S. Circuit Court of Appeals, just minutes before Friday's midnight deadline, attorneys for the players reiterated their argument that the NFL has violated antitrust laws. They also argued the lockout has imposed immediate, career-ending threatening harm on players and may deprive the public of the 2011 professional football season. "The players face immediate, continuing, severe irreparable injury from unlawful conduct orchestrated to force them to re-unionize against their will and make immense financial concessions," the players' attorneys wrote. "The NFL, by contrast, claims only a temporary loss of leverage by members of a cartel that is no longer entitled to any exemption from the antitrust laws."