Top 5 MLS Cup favorites

In early September I ran my top 5 picks for MLS Cup dark horses. Some look promising now (RSL), some not so much (Chicago). Now, with most of MLS taking a break this weekend, we level our gaze on the top five frontrunners. It's all about the big dogs today. With the wild card round almost two weeks away and the picture rapidly crystallizing, here are the top five teams most likely to take home