Covington & Burling might still be smarting from its loss before the Supreme Court in the American Needle case, but the firm, longtime outside counsel to the National Football League, now has another big legal battle on its hands. A complaint filed by the NFL Players Association is challenging the league’s billion-dollar television contracts.

On Wednesday, the NFLPA released a statement announcing it had filed a complaint before NFL special master Stephen Burbank in Philadephia challenging the structure of the NFL’s television contracts with CBS, FOX, NBC, ESPN and DirecTV. The complaint comes as both the players union and the league dig in their heels on a new labor contract to distribute revenue.