They were down but never out. They were bruised but not beaten. The never-say-die Astros -- facing a four-run deficit in a pivotal Game 5 of the World Series with Dodgers ace Clayton Kershaw on the mound -- pulled off the unthinkable in an epic game in an unforgettable Fall Classic. Alex Bregman shot a walk-off single into left field off Dodgers closer Kenley Jansen in the 10th inning to put an end to the second-longest World Series game in history, sending the Astros to a dramatic 13-12 victory on a Sunday night.