New York Mets -- Signed Kevin McReynolds (outfielder) to a contract extension through 1994.
* Pittsburgh Pirates -- Named Jack Zduriencik director of scouting.
BASKETBALL (NBA) * Boston Celtics -- Re-signed Dave Popson (forward) for the remainder of the season. Placed Derek Smith (guard-forward) on the injured list.
HOCKEY (NHL) * Hartford Whalers -- Assigned Yvon Corriveau (left wing) to Springfield of the AHL.
* New York Rangers -- Signed Jan Erixon (forward).