July 4, 2012; Los Angeles, CA, USA; Philadelphia Union goalkeeper Zac MacMath (18) defends a shot on goal by Los Angeles Galaxy forward Mike Magee (18) in the first half of the game at the Home Depot Center. Mandatory Credit: Jayne Kamin-Oncea-US PRESSWIRE

July 4, 2012; Los Angeles, CA, USA; Philadelphia Union midfielder/defender Gabriel Farfan (15) and Los Angeles Galaxy midfielder Hector Jimenez (16) head the ball in the first half of the game at the Home Depot Center. Mandatory Credit: Jayne Kamin-Oncea-US PRESSWIRE

Real Salt Lake defender Chris Wingert (17) tackles Seattle Sounders midfielder Mauro Rosales (10) during their MLS soccer match, Wednesday, July 4, 2012, in Sandy, Utah. (AP Photo/The Salt Lake Tribune, Michael Mangum) DESERET NEWS OUT; LOCAL TV OUT; MAGS OUT

Seattle Sounders goalkeeper Bryan Meredith (35) dives for the ball after a shot from Real Salt Lake during their MLS soccer match, Wednesday, July 4, 2012, in Sandy, Utah. (AP Photo/The Salt Lake Tribune, Michael Mangum) DESERET NEWS OUT; LOCAL TV OUT; MAGS OUT

July 4, 2012; Los Angeles, CA, USA; Los Angeles Galaxy midfielder Hector Jimenez (16) and Philadelphia Union midfielder/defender Gabriel Farfan (15) in the first half of the game at the Home Depot Center. Mandatory Credit: Jayne Kamin-Oncea-US PRESSWIRE

July 3, 2012; Houston, TX, USA; Chicago Fire goalkeeper Sean Johnson (25) in action against the Houston Dynamo during the first half at BBVA Compass Stadium. The Astros won 1-0.

July 3, 2012; Houston, TX, USA; Chicago Fire midfielder Marco Pappa (16) and Houston Dynamo defender Jermaine Taylor (4) in action during the first half at BBVA Compass Stadium. The Astros won 1-0.

July 3, 2012; Houston, TX, USA; Houston Dynamo forward Will Bruin (12) in action against the Chicago Fire during the first half at BBVA Compass Stadium. The Astros won 1-0.

MONTREAL, CANADA - JULY 4: Paulo Nagamura #6 of the Sporting Kansas City and Patrice Bernier #8 of the Montreal Impact jump to head the ball during the MLS match at the Saputo Stadium on July 4, 2012 in Montreal, Quebec, Canada. (Photo by Richard Wolowicz/Getty Images)
 

Sporting Kansas City's Graham Zusi (R) tackles Montreal Impact's Patrice Bernier during the first half of their MLS soccer match in Montreal, July 4, 2012.

FRISCO, TX - JULY 4: Brek Shea #20 of FC Dallas fights for the ball against Terry Dunfield #23 of Toronto FC at FC Dallas Stadium on July 4, 2012 in Frisco, Texas.

FRISCO, TX - JULY 4: Fabian Castillo #7 of FC Dallas takes a shot on goal against Richard Eckersley #27 of Toronto FC at FC Dallas Stadium on July 4, 2012 in Frisco, Texas.

Colorado Rapids midfielder Jaime Castrillon, left, gets tangled up with Vancouver Whitecaps defender Jay DeMerit while pursuing the ball in the first half of a Major League Soccer game on Wednesday, July 4, 2012, in Commerce City, Colo.

Colorado Rapids midfielder Martin Rivero, left, picks up a loose ball as Vancouver Whitecaps defender Lee Young-Pyo covers in the first half of a Major League Soccer game on Wednesday, July 4, 2012, in Commerce City, Colo.

Fans roll out the United States flag during a ceremony to mark the Fourth of July before an MLS soccer match between the Colorado Rapids and the Vancouver Whitecaps, Wednesday, July 4, 2012, in Commerce City, Colo.