Nationals infielder Brett Carroll and catcher Carlos Maldonado have declared themselves Minor League free agents, according to Baseball America.
Both Carroll and Maldonado had brief stints in the Major Leagues this season. Carroll played five games and was hitless in two at-bats. Maldonado appeared in four games and was hitless in nine at-bats.
Other Minor Leaguers -- Atahualpa Severino, Mark Teahen, Zech Zinicola, Mike MacDougal and Seth Bynum -- are expected to be Minor League free agents soon.