The bj-league's Tokyo Apache and JBL's Toyota Alvark have knocked down the first barrier separating the nation's two professional basketball leagues, even if it happened in secrecy, The Japan Times has learned.

The teams staged a scrimmage last week, several sources have confirmed. None of the sources, however, would reveal the location of the game.

This was the first-known competition between teams from both leagues. And it comes at a time when there is increased talk of a possible merger in 2013 between the leagues, though many doubt it will happen at that time due to a number of issues.