The Washington Nationals have hired former Chicago White Sox general manager Ron Schueler as special adviser to GM Mike Rizzo and promoted Bill Singer to director of professional scouting.

Schueler worked for the San Francisco Giants the past two seasons. He was GM of the White Sox from 1990-2000.

Singer's new duties include overseeing Washington's major league, minor league and winter league scouting efforts. He was fired from his job as a special assistant to the general manager by the New York Mets in 2003 after making racially insensitive remarks to an executive from another team.

Singer joined the Nationals as a special assignment scout in 2006 after three years as a major league scout with the Arizona Diamondbacks, where he worked under Rizzo.