(Houston, TX)  --  The Timbers will play Saturday in Houston.  Portland is coming off a 2-1 victory Sunday over Vancouver.  The Blazers are tied for fourth in the MLS Western Conference standings with 30 points.  The Houston Dynamo are in third with 32 points.  Winger Dairon Asprilla and left back Vytas are questionable for the match.  In other news, the team officially acquired New Zealand international Bill Tuiloma.