In front of 16,112 on Sunday night, Dallas kept the Sounders' record of never winning an opening leg in a playoff series alive.
Seattle got an early good look on goal in the 18th minute on a ball over the top to Obafemi Martins. A Seattle midfielder played the ball over the top of the Dallas defense to Martins, who got a clear break away on goal. Dallas keeper Raul Fernandez would come up huge on a stop to keep the Nigerian from scoring.
The first big break for Dallas came in the 32nd minute. Andres Escobar worked his way in to the penalty box and after making one move around a defender Marco Pappa would trip Escobar for a penalty kick that Michel would convert.
The Sounders nearly found one in the final moments of the first half as Martins again caused Fernandez to make a stop but the ball was pushed out as far as Clint Dempsey who put a shot on goal that Matt Hedges had to clear off the goal line.
Seattle would tie things up in the 54th minute on a free kick goal. Pappa would redeem himself from earlier in the match with his service on the free kick. His ball was whipped into the middle of the penalty box where Osvaldo Alonso was wide open to finish the ball.
Seattle keeper Stefan Frei would come up huge on a number of chances late in the match including a big stop in the 90th minute of the match on Castillo.
The two sides will meet again next Monday night in Seattle for the final match in this series.