The teams met twice in the regular season. The Galaxy won the first match 5-2 and then they played to a 3-3 draw in September.
The Galaxy finished third in the Western Conference. Real Salt Lake finished sixth. Last year, the Galaxy lost in the knockout round on the road against Seattle.
The Galaxy has been strong all season, with just one loss in MLS games and one in the U.S. Open Cup. RSL has lost 11 road games.
Will tonight have a different ending?
Game day links: