Colorado placed Sugano (back) on the 15-day injured list Saturday, retroactive to July 1.
Sugano was slated to pitch Saturday after having a few extra days to deal with a finger injury. While that issue appears to be in the rearview mirror, the right-handed hurler recently developed back spasms that are serious enough to result in a stint on the IL. Sean Sullivan was recalled from Triple-A Albuquerque on Saturday to replace Sugano in the rotation.