THE RUNDOWN Roger Clemens has helped Roy Oswalt become a complete pitcher. Oswalt's fastball has a second gear, and his curve is nasty.... It was Christmas in June when the Astros got Carlos Beltran. In that hitters' ballpark, Houston had a screaming need for a true centerfielder.... Craig Biggioabandoned his leg kick, and he's closer to being the selective hitter he used to be.... Jeff Bagwell has the monkey off his back after hitting his first two playoff home runs against Atlanta. He's a bona fide No. 3 hitter who walks and is a threat to homer, but his swing has lost some of its thunder because of his shoulder injury.... Jeff Kent is still a steady performer, though he can be beaten with fastballs that never used to get by him.... Morgan Ensberg has too many holes in his rigid swing. In that lineup Mike Lamb is a better option at third base.... Phil Garner has made a tremendous difference as manager the last three months; the Astros are more aggressive on the base paths and playing together again. FOCAL POINT Trading Octavio Dotel for Beltran allowed the Astros to elevateBrad Lidge, who has established himself as a premier closer. His slider is usually unhittable: Sometimes it looks like a slider, sometimes it resembles a hard curve, and sometimes it looks like a split-finger. HOW TO BEAT THE CARDINALS The Astros have to get at least seven innings from Clemens and Oswalt to keep their bullpen from wearing down. The heart of St. Louis's order is devastating, but Jim Edmonds and Scott Rolen will chase fastballs up in the zone. When Edgar Renteria falls behind in the count he'll panic and swing at breaking balls off the plate.