Now that D.C. United is unfortunately out of the CONCACAF Champions League, they'll face, well, another team that made CCL knockout round. The LA Galaxy are coming off an even worse loss than the Black-and-Red, having been hounded out of the competition thanks to a 4-0 loss at Santos Laguna. LA rarely gets blown away, so it will be interesting to see how they react.
One thing we can count on with certainty is that Bruce Arena will play his preferred "keep it simple, stupid" 442. We may occasionally see Nigel De Jong drop deep underneath Steven Gerrard, particularly if United is creating a lot of danger from that area of the field.