The Colorado Rockies have activated Aaron Cook off of the disabled list to make his first start of the 2011 season. In a corresponding move, Greg Reynolds has been sent back to Triple-A Colorado Springs. But there are several other changes that come in the middle of those two. Rookie Juan Nicasio will stay in the rotation and Clayton Mortensen will move back into the bullpen.
Cook had been out since early spring training with a shoulder injury and then broke the ring finger on his throwing hand in March. Reynolds first came up for the Colorado Rockies when Ubaldo Jimenez went on the disabled list after his Opening Day start. Mortensen joined the rotation when Esmil Rogers went down with injury. Nicasio was brought up when Jorge De La Rosa was lost for the season (the Rockies just moved De La Rosa to the 60-Day DL on Wednesday).
Reynolds had been used sparingly out of the bullpen, but now he can start with the Sky Sox. Mortensen made six starts for the Rockies and posted a 4.16 ERA as a starter, but Nicasio has looked good in his two turns in the rotation (2.08 ERA).