Moreno and Steve Ralston are the only players to have played in each of the first 15 MLS seasons.
The 2010 MLS season showed van den Bergh to be a man without a team.
He appeared in 19 matches during the MLS regular season.
The club finished the MLS regular season with a 17-7-8 record, their best in nearly a decade.
The new MLS season starts in March.
Between the 1997 and 1998 MLS seasons he had a brief spell at Chivas before returning to Dallas in 1998.
The stadium was the home for the Major League Soccer team Dallas Burn in the 1999, 2001, and 2004 MLS seasons.
In eight MLS seasons, Rhine's regular-season totals stand at 23 goals and 33 assists.
United's MLS regular season was cut short after 26 matches due to the September 11 attacks.
Oduro stayed with Houston through the 2009 and 2010 MLS seasons.