HOUSTON (AP) — Logan Gilbert threw eight dominant innings, Luis UrÃas and Cal Raleigh homered and the Seattle Mariners beat the Houston Astros 5-0 on Saturday night. Gilbert (3-0) allowed two hits and four walks and struck out six. He has allowed two runs or fewer in six of his seven starts The right-hander retired 16 of 17 at one point. UrÃas hit a solo home run to center to lead off the fifth, and Raleigh added a two-run shot to left center in the sixth. Mitch Garver had an RBI double in the f