Yordan Alvarez had a three-run home run among three hits, and four Houston pitchers limited Oakland to a total of three singles Saturday afternoon as the visiting Astros made it three straight over the A's with a 9-1 victory.

Lance McCullers Jr. (1-0) struck out seven in five innings, allowing just one run on two hits, to help Houston start 3-0 for the first time since its World Series-winning year of 2017.