MLS stands for Major League Soccer, it is the top league of soccer here in the United States. The MLS is currently in its 9th season. The league began with 10 clubs and at one point expanded to 12, before contracting back to 10 clubs. The MLS will expand next year, with the addition of Real Salt Lake and CD Chivas. Over the years, MLS has gained in popularity. Each club vies for the league title which is called the MLS Cup.
Chicago Fire
DC United
NY/NJ Metrostars
New England Revolution
FC Dallas
Kansas City Wizards
Colorado Rapids
San Jose Earthquakes
Los Angeles Galaxy
CD Chivas
Real Salt Lake