Miami Dolphins
Acquired quarterback Cade McNown from the Chicago Bears for undisclosed draft picks.

San Diego Chargers
Signed running back LaDainian Tomlinson, their first round pick in the draft, to a six-year contract.

Seattle Seahawks
Signed quarterback Matt Hasselbeck to a multi-year contract.

Washington Redskins
Signed safety Keith Lyle, who had been with the St. Louis Rams

Released quarterback Mike Watkins

Released cornerback Eric Whitfield with an injury settlement.