Columbus Crew's Chad Mendes (14) heads the ball past Philadelphia Union's Danny Cruz (44) in the first half of an MLS soccer game on Wednesday, Aug. 29, 2012, in Chester, Pa. (AP Photo/Michael Perez)

Philadelphia Union's Gabriel Farfan, left, heads the ball over Columbus Crew's Jairo Arrieta (29), of Costa Rica, in the first half of an MLS soccer game on Wednesday, Aug. 29, 2012, in Chester, Pa. (AP Photo/Michael Perez)

Philadelphia Union's Carlos Valdes (2), of Colombia, celebrates after he scored a goal from a penalty kick in the first half of an MLS soccer game against the Columbus Crew, Wednesday, Aug. 29, 2012, in Chester, Pa. (AP Photo/Michael Perez)

Olympic soccer gold medalist Carli Lloyd, left, shakes hands with Philadelphia Union coach John Hackworth before the start of an MLS soccer game against the Columbus Crew, Wednesday, Aug. 29, 2012, in Chester, Pa. (AP Photo/Michael Perez)

Columbus Crew's Eddie Gaven (12) drives the ball past Philadelphia Union's Danny Cruz in the second half an MLS soccer game on Wednesday, Aug. 29, 2012, in Chester, Pa. The Crew won 2-1 in extra time. (AP Photo/Michael Perez)

Columbus Crew's Matt Lampson (28) makes a save against the Philadelphia Union in the second half an MLS soccer game on Wednesday, Aug. 29, 2012, in Chester, Pa. The Crew won 2-1 in extra time. (AP Photo/Michael Perez)

Philadelphia Union's Sheanon Williams, right, heads the ball past Columbus Crew's Justin Meran (9) in the second half an MLS soccer game on Wednesday, Aug. 29, 2012, in Chester, Pa. The Crew won 2-1. (AP Photo/Michael Perez)

Philadelphia Union's Amobi Okugo, center, works the ball around Columbus Crew's Danny O'Rourke (5) and Chad Mendes in the second half an MLS soccer game on Wednesday, Aug. 29, 2012, in Chester, Pa. The Crew won 2-1 in extra time. (AP Photo/Michael Perez)

Columbus Crew's Cole Grossman (22) celebrates in front of Philadelphia Union's Sheanon Williams (25) after teammate Eddie Gaven (12) scores a goal in the second half an MLS soccer game on Wednesday, Aug. 29, 2012, in Chester, Pa. The Crew won, 2-1. (AP Photo/Michael Perez)

Referee Yader Reyes, left, gives a red card to Columbus Crew's Josh Williams (3) in the second half an MLS soccer game against the Philadelphia Union on Wednesday, Aug. 29, 2012, in Chester, Pa. The Crew won 2-1 in extra time. (AP Photo/Michael Perez)