The Astros lost on a walk-off home run in Pittsburgh. Houston fell to the Pirates 7-4 at PNC Park when Ji Hwan Bae hit a three-run shot off of Ryan Pressly in the bottom of the ninth of a tie ballgame. Alex Bregman and Kyle Tucker both homered in the losing effort. Tucker now has four home runs this season. Pressly dropped to oh-and-2 this season after letting up the winning runs. Houston had its two-game winning streak snapped and slips to 5-and-7. Right-hander Jose Urquidy will start on the hill for Houston this morning in the series finale.