Chivas USA won the west and now will await the result of Chicago-Los Angeles to see who they get.
It's actually pretty straightforward.
If Chicago wins, it's Chivas-Kansas City.
If Chicago and LA tie, it's Chivas-Chicago.
If Los Angeles wins, it's Chivas-Galaxy.
The away leg would be at KC on Saturday, at Chicago on Thursday or against the Galaxy on Sunday. The home leg is likely set for Saturday, Nov. 3.