WASHINGTON — The Washington Nationals say they have acquired starting pitcher Scott Olsen and outfielder Josh Willingham from the Florida Marlins for three players.

The Nationals will have a news conference at their stadium Tuesday to introduce their new players.

The Marlins get second baseman Emilio Bonifacio and two minor leaguers: second baseman Jake Smolinski and right-hander P.J. Dean.

The trade signals the start of the Nationals' efforts to revamp their roster after a worst-in-the-majors 59-102 season.