• Weiss confirmed that Jhoulys Chacin will start in place of Roy Oswalt against the Red Sox on Wednesday. Chacin has a .3.77 ERA in 17 starts at Coors Field this year.
• A strained calf has kept Rosario out of the lineup since Sept. 17, and Weiss said he'd probably be ready before the Rockies' final series of the year against the Dodgers. That series begins Friday at Dodger Stadium.
• Weiss still hasn't ruled out Jorge De La Rosa making one final start this year. De La Rosa has been scratched from his past two starts due to a bruised left thumb that's been nagging him for more than three months.
"Those chances are becoming slimmer obviously, but he is going to play catch today and he does say it feels better today without having thrown a ball yet," Weiss said. "But we'll have a better idea after he plays catch."