The Dash will be looking for a win over the Spirit to possibly host a playoff game. The Houston Dash are going to the NWSL Playoffs for the first time in club history after San Diego and North Carolina played to a 0-0 draw last night. The Dash now take on the Washington Spirit tonight, knowing a win could mean they host a playoff game at PNC Stadium. In order to do so, the Dash need a win and a Kansas City loss at Louisville or a win by four or more goals. The Dash and Spirit drew 2-2 at…