Astros No. 1 starter Bud Norris takes the mound Tuesday against the Seattle Mariners in a 7:10 p.m. matchup at Minute Maid Park. Norris (2-2, 4.74 ERA) is coming off the shortest start of his career: a five-run, six-hit, three-walk outing that lasted just 2/3 of an inning last Wednesday during a road loss to Oakland. He’ll face Mariners righty Hisashi Iwakuma (2-0, 1.69) on Tuesday. The Astros (5-14) have lost 8 of 9 and are in last place in the American League. The Mariners (8-13) defeated the Astros 7-1 Monday in the series-opener. Mariners’ lineup: Chavez CF, Seager 3B, Morales DH, Morse RF, Smoak 1B, Ibanez LF, Montero C, [...]