Despite being the better team throughout, the Union failed to convert on a series of a chances and were left to accept a 0-0 draw on a night where Houston failed to register a single shot on target.
The Union turned in a valiant effort, but eventually gave up two goals in extra time as the visiting Seattle Sounders took home the 2014 US Open Cup.
While the Union were left to rue conceding two soft goals, Jim Curtin can again take pride in the grit and determination of his side after they fought back for a 2-2 draw.
Philadelphia Union twice scored a pair of goals in close succession to run away the 4-2 victors after a two-goal San Jose fight back.
In their third game in a week, Philadelphia Union fell to the Dynamo 2-0 in Houston.