The Astros gave Roger Clemens two runs on Monday night and it turned out to be enough. Houston beat the Florida Marlins 2-1 for their first road win in 11 tries. Clemens earned his 20th win with the Astros and the 330th of his career, moving him ahead of Steve Carlton into sole possession of ninth place on the all-time list. ``It means a lot,'' Clemens said. ``It definitely puts in perspective what type of career Carlton had.'' ``Once we got the two runs, it felt like a lot,'' Clemens said. ``You just try not to make any mistakes.''