Shane Reynolds is the Astros' ace, but for a team that once had the arms of Nolan Ryan, J.R. Richard and Mike Scott," that doesn't mean quite what it used to. Now, with Darryl Kile gone to Colorado, Reynolds will be handed the ball on Opening Day and, from there, has no choice but to win 20 games. If the Astros hope to climb to the top of a weak division. Last season, when he missed five weeks with a knee injury, Reynolds was 9-10 with a mediocre 4.23 ERA, but he insists he's regained the form that allowed him to go 16-10 with a 3.65 ERA in '96. The Astros will thank their lucky stars if he's right.