The U.S. Development Academy quarterfinal originally scheduled for Wednesday at 7 p.m. at PPL Park will now be played at 5 p.m. on the training fields outside the stadium.
The game was moved because of re-sodding of the field in the stadium.
The No. 2 overall seed in the tournament, the Union advanced to the knockout stage after going 3-0 in the group stage of the playoffs in Westfield, Indiana. The winner of Wednesday's game will travel to Carson for the semifinals on July 16 and the finals will be held on July 18.