July 2008: Vikings defensive tackles Kevin and Pat Williams have routine drug tests before training camp. Both players were to receive bonuses for reporting under certain weights, and both admitted they used a diuretic, StarCaps, to cut weight.

Sept. 2008: The players are informed they will be suspended for four games by the NFL for taking a banned substance, bumetanide. They appeal the suspensions, saying the ingredient was not listed on the StarCaps label.

Dec. 2008: The NFL announces the suspension of the Williamses and four other players without pay for violating the league's anti-steroid policy. A restraining order is issued allowing the Williamses to play, and eventually a U.S. district judge blocks the NFL from enforcing the suspension until there's a full hearing.

Feb. 2009: The Williamses file a $10 million lawsuit against the NFL, contending the league was aware StarCaps contained an unlisted banned substance but didn't warn players.

Sept. 2009: The Eighth U.S. Circuit Court of Appeals affirms earlier rejections of the NFL's argument that federal courts have jurisdiction over the labor laws that govern its drug-testing program. The case returns to Hennepin County District Court for a trial in spring 2010, meaning the Williamses play the 2009 season.

March 2010: At a five-day trial in Minneapolis, a key issue is who employs the players -- the NFL or the team. The Williamses claim they are protected by Minnesota state laws, including one that prohibits employers from imposing discipline based on a single positive test and demands other procedural protections before sanctions are imposed.

May 2010: A judge rules the Williamses can be forced to serve their suspensions even though the NFL violated their rights under state labor laws. They appeal and play the 2010 season.

Feb. 2011: The Minnesota Court of Appeals rules in favor of the NFL.

March 2011: Kevin Williams opts not to appeal the ruling. Pat Williams files an appeal.

Friday: Kevin Williams is suspended for two games without pay and will lose pay for two more games, costing him around $1.4 million.