Head coach John Hackworth chose to keep the majority of his lineup from last weekend's 1-1 tie with Toronto FC intact, with the one change in the form of Michael Farfan on the left side of the midfield instead of Sebastien Le Toux.
Zac MacMath will start in goal behind the backline that has protected him so far this year. Sheanon Williams will take the field at right back, with Amobi Okugo and Jeff Parke in the center and Raymon Gaddis on the left.
The midfield will most likely retain its shape in the Philadelphia Union's pseudo-4-1-3-2 formation, with Brian Carroll playing a holding role supporting a trio in front of him. Michael Farfan will play on the left, Keon Daniel in the middle and Danny Cruz on the right, based upon Hackworth's comments this week and last week's formation decisions.
Conor Casey and Jack McInerney will once again partner in the Union's attack. The two combined relatively well versus Toronto, but only managed a solitary - allowed - goal in 90 minutes.
On the bench are Le Toux, Roger Torres, Kleberson, Chris Konopka, Antoine Hoppenot, Michael Lahoud and Gabriel Farfan.
D.C. United will start Bill Hamid in goal, and Chris Korb, Brandon McDonald, Dejan Jakovic and Daniel Woolard in their defense. United's midfield will consist of Kyle Porter, Perry Kitchen, Marcelo Saragosa and Chris Pontius. Dwayne De Rosario and former Union striker Lionard Pajoy will play up top.
Fourth official Sorin Stoica was the head referee for the Union's draw with Toronto last Saturday... Pajoy is tied for the scoring lead on United with a single goal this year... Carlos Ruiz, another former Union striker, played 26 minutes last week, which is the most he has played in 2013 since joining United... the all-time series is currently 3-2-2 in favor of United... D.C. will have a moment of silence for those who were affected by the Boston Marathon bomings on 4/15.