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LOS ANGELES, CA - SEPTEMBER 20: Head coach Bruce Arena of the Los Angeles Galaxy shouts to a sideline referee during the game with FC Dallas at StubHub Center on September 20, 2014 in Los Angeles, California. (Photo by Stephen Dunn/Getty Images)

LOS ANGELES, CA - SEPTEMBER 20:  Head coach Bruce Arena of the Los Angeles Galaxy shouts to a sideline referee during the game with FC Dallas at StubHub Center on September 20, 2014 in Los Angeles, California.  (Photo by Stephen Dunn/Getty Images)