Box score CHICAGO — Practically dressed alike in blue jeans and untucked blue long-sleeved shirts, Astros rookie righthander Paul Clemens and veteran lefthander Erik Bedard passed each other without saying a word late Tuesday night inside the visitors’ clubhouse at U.S. Cellular Field. Clemens was heading to his locker; Bedard was walking out of the clubhouse. The scene was a perfect metaphor for their places in the Astros organization. As far as the rebuilding process goes, the young Astros took another positive step Tuesday night, with Clemens justifying his recent addition to the starting rotation. Bedard, however, gave it all away in the eighth inning against the Chicago White Sox. [...]