Real Madrid beat Chivas de Guadalajara 3-0 on Saturday. Cristiano Ronaldo scored a second-half hat-trick to upend the Mexican outfit.
The Union have already taken one European scalp, beating Everton 1-0 on Wednesday. Christian Hernandez, an unsigned 17-year-old academy player, scored the winner.
This is Madrid's third game of their tour of the United States. Prior to the Chivas friendly, the Copa del Rey champions beat the LA Galaxy 4-1.
Philly attacking midfielder Veljko Paunovic formerly suited up for Atletico Madrid, Real's cross-town neighbour. However, a hip strain might prevent the 33-year-old from taking part.
Faryd Mondragon will line up for the MLS All-Stars against Manchester United on Wednesday. He is the only Union representative.
PROBABLE LINEUPS
Philadelphia Union (4-4-2):
MacMath; Williams, Valdes, Miglioranzi, Farfan; Mapp, Okugo, Torres, Daniel; Mclnerney, Mwanga.
INJURY REPORT
OUT: FW Levi Houapeu (ankle strain)
QUESTIONABLE: FW Veljko Paunovic (hip strain); MF Kyle Nakazawa (lower back strain)
Real Madrid (4-3-1-2):
Adan; Arbeloa, Pepe, Varane, Marcelo; Ozil, Granero, Coentrao; Kaka, Ronaldo, Benzema.
INJURY REPORT : None
Prediction
Philadelphia Union 1-3 Real Madrid 
