1. Seattle Sounders and Portland Timbers - The definitive rivalry in the MLS. These two clubs have arguably the biggest fanbases in the MLS and the atmosphere at a game between Sounders and Timbers rivals most games in Europe. This rivalry has it all: history, geography, passion, and die hard fans. This is one rivalry even MLS haters should watch.
2. Los Angeles Galaxy and San Jose Earthquakes - This might not be a rivalry game being played this weekend, but on the west coast only this comes second to Sounders and Timbers. It's a battle for California bragging rights and the games these two teams produce are always exciting and keep you entertained thoroughly.
3. New York Red Bulls and DC United - One of the most known rivalries in the MLS, New York and DC have a history of dislike for one another. DC has been more successful, but New York gets the media coverage and the revenue being in the Big Apple. The addition of Thierry Henry to the rivalry mixed with former MLS MVP Dwayne De Rosario have spiced it up even more than before. A game between these two never disappoints.
What do you think? What are the top MLS rivalries in your opinion? What's your favorite?