Yahoo Sports reports: Yordan Alvarez hit a grand slam for his American League-leading 22nd home run, Tatsuya Imai struck out eight and the Houston Astros defeated the Athletics 13-2 on Saturday. Alvarez capped the Astros' five-run second inning with the fifth slam of his career when he blasted a changeup from Athletics starter Kade Morris (0-1) into the right field seats.