Amador (oblique) was sent to Double-A Hartford on Sunday to begin a rehab assignment.
Amador has been on the 10-day injured list for a little over a week with a strained oblique but has been cleared to return to game action. He should be ready to be activated soon, but with Brendan Rodgers beating him back from the IL, Amador is likely to remain with Hartford upon his activation rather than returning to the Rockies.