Jeff Karstens' left knee bothered him throughout the game, and it didn't matter one bit. He was just that good. Karstens pitched three-hit ball into the seventh inning and five relievers finished the four-hitter, leading the Pittsburgh Pirates to a 1-0 victory over the Houston Astros on Tuesday night. Read more: http://scores.espn.go.com/mlb/recap?gameId=310614118&teams=pittsburgh-pirates-vs-houston-astros
