Jim Armstrong reports that a trip to the bullpen is more likely for Cook than a move to the bullpen, at least for now:
Cook, who has lasted a total of 9 2/3 innings in his last three starts, all losses, is expected to be placed on the 15-day disabled list. The move would facilitate Jhoulys Chacin, currently at Triple A Colorado Springs, moving into the rotation.
Chacin has been back and forth between Triple A and the majors this season. Hopefully this promotion is a permanent one.