The weather provided most of the heat in Chicago for Seattle.
Injuries lead to frustrations and no scoring.
Seattle waits until late in extra time to pull out the three points.
Heavy rains don't damper the Sounders fight.
DC United ended Seattle's six-game unbeaten streak Wednesday by a score of 2-1.
Sounders honor Zakuani and White with 3-0 blowout of Toronto FC.
Montero finally scores but is overshadowed by a horrific Zakuani injury.
Seattle saves a point in the drowning rains of Philadelphia.
The Sounders finally break the goose egg in the win column against the Chicago Fire.