With the calendar about to shift to September, the Nationals have plans to expand their roster in time for Saturday's game against the Cardinals.
Manager Davey Johnson said the club will recall left-hander John Lannan, catcher Sandy Leon and outfielder Eury Perez from Class AAA Syracuse. Veteran utilityman Mark DeRosa also will be activated off the disabled list after missing the last month with an abdominal strain.
The Nationals plan more reinforcements next week, after Syracuse's season ends on Monday. Johnson hinted that outfielder Corey Brown and reliever Christian Garcia will join the big-league roster at that point.
Of the September call-ups, Lannan figures to have the greatest impact. The left-hander was kept at Class AAA the entire season (aside from two spot starts during doubleheaders) specifically to take over the rotation spot that will become vacant when Stephen Strasburg is shut down.