The Union on Wednesday will have their one chance to face Major League Soccer royalty when the Los Angeles Galaxy visit Talen Energy Stadium for the first time since 2013.
The Galaxy (5-1-3) are again among the top teams in MLS. Coach Bruce Arena's team has won three of the last five MLS championships
"They are the gold standard of the league, the [NFL's New England] Patriots of MLS, and they have a way of winning," Union coach Jim Curtin said of the Galaxy.
Over the years the Galaxy have had some of the biggest names in MLS, such as Landon Donovan and David Beckham, and there is still plenty of star power.