The Mariners are looking to tie up their American League Division Series.  Seattle takes on the Astros this afternoon in Houston.  The Mariners suffered a tough 8-7 loss in Game One after Robbie Ray allowed a three-run walk-off home run to Yordan Alvarez.  The club sends right-hander Luis Castillo to the mound for Game Two.  Opposite him is left-hander Framber Valdez for Houston.  The ALDS is a best-of-five set.