"The Nationals could not reach settlements with two of their seven arbitration-eligible players, starter John Lannan and outfielder Michael Morse, by today's deadline. The team therefore filed salary arbitration figures for the 2012 season with the players, a step that could lead to arbitration hearings, a nasty process the Nationals prefer to avoid.
To be clear, both Lannan and Morse will play for the Nationals next season barring a trade. The arbitration process merely determines their salary."