The Nationals assigned him to the Arizona Fall League after the regular season .
In 2011 , Martin pitched for the Potomac Nationals of the Class A-Advanced Carolina League and the Harrisburg Senators of the Class AA Eastern League .
The Nationals assigned Martin to the Arizona Fall League after the regular season .
In 2011 , Martin pitched for the Potomac Nationals of the Class A-Advanced Carolina League and the Harrisburg Senators of the Class AA Eastern League .