The Astros have played six games since winning their season-opener and American League debut March 31 against the Rangers at Minute Maid Park. The Astros have lost all six contests. The rebuilding club has only scored nine total runs during its slide. And the team has been shut out three times. The third blank occurred Monday, courtesy of a 3-0 defeat to the Mariners in an AL West matchup at Safeco Field. Astros (1-6) starting righthander Philip Humber threw six solid innings of five-hit, three-run ball. But the former Rice standout received little offensive support. The Astros struck out eight times and failed to convert several scoring opportunities, leaving seven runners on base. The Astros’ American League road debut finished at 11:53 p.m. CT, starting a new late-night West Coast trend for the former National League club. The Mariners (4-4) took a 2-0 lead into the fifth inning, courtesy of two RBIs from designated hitter Kendrys Morales. A perfectly executed squeeze bunt by Franklin Gutierrez scored Dustin Ackley in the fifth, making it 3-0 Seattle. Matt Dominguez went 2-for-4 to lead the Astros, who entered the game hitting just .199 and posting a .234 on-base percentage.