The Union (10-7-14) took the lead in the 59th minute when Justin Mapp found space in the Chivas midfield and fired a shot from the edge of the box that was too much for goalkeeper Dan Kennedy.
After pressuring Philadelphia at the end of the match, Chivas got the tying score when Mike Lahoud connected with Angel, who was able to head the ball into the net. It was Angel's seventh goal in seven games with Chivas.
The Union moved into second place in the Eastern Conference while Chivas USA got to four points behind the New York Red Bulls for the final playoff berth.
(Copyright 2011 Philadelphia Union. Reprinted by permission)