The Dynamo have lost three straight MLS matches but come off a midweek win in Lamar Hunt US Open Cup play. The Houston Dynamo will hope Wednesday’s win over San Antonio FC in the Lamar Hunt US Open Cup can provide momentum as they return to league play tonight. Houston has lost three straight matches in Major League Soccer play and with Nashville SC at PNC Stadium tonight, the Dynamo will be looking to end that skid and pick up a much-needed three points. Nashville is coming off a comeback win over Atlanta United Wednesday in their Open Cup Round…