Preview: The Phillies can clinch a playoff spot with a win or a loss by the Cardinals. That's the headline tonight as the NL East leaders take on the Astros in the middle game of their three-game series. Cole Hamels (14-7, 2.60) takes the mound for the Phils. He is trying to match his career high for victories, set in 2007. J.A. Happ (5-15, 5.77) goes for the Astros. His struggles were discussed in the last BL thread. The Phillies are trying to avoid their first three-game losing streak since they dropped four in a row from May 31 to June 4. Lineup: No Shane Victorino for the Phils, who go with Jimmy Rollin SS, Placido Polanco 3B, Hunter Pence RF, Ryan Howard 1B, John Mayberry Jr CF, Ben Francisco LF, Carlos Ruiz C, Michael Martinez 2B, Cole Hamels P.