Astros 2, Mariners 0
HOUSTON — Rookie Brett Oberholtzer pitched a four-hitter and Jason Castro hit an RBI double in the eighth inning, lifting the Astros. Oberholtzer, 24, did not allow an extra-base hit in his sixth career start and ninth appearance. He had never pitched more than seven innings. Charlie Furbush took over for Mariners starter Hisashi Iwakuma in the eighth, and Jose Altuve greeted him with a double that rolled into the rightfield corner. Castro followed with a ground-rule double that bounced into the bullpen in right-center.