keywords: clemens astros scratched houston rockies
text: Clemens to Miss Start With Virus HOUSTON - Roger Clemens was scratched from Houston's critical regular-season finale against the Colorado Rockies on Sunday after coming down with a stomach virus, missing a chance to help the Astros clinch the NL's wild-card spot.    With a victory over the Rockies or a San Francisco loss at Los Angeles, Houston would clinch the final playoff spot...