This week, there a plethora of storylines to watch for. The MLS season is going to keep heating up. With the standings starting to shake up: Who are contenders? Who are pretenders?
With all clubs freed from all other competitions now, it is going to be all in for MLS matches for the next coming weeks. Well, Week 9 is a good start.
Here are five of the key storylines to watch.

Philly vs DC rivalry
The Philadelphia Union and DC United might not be having spectacular seasons.