Junis (back) threw a "pretty intense" bullpen session Friday, Lynn Worthy of The Kansas City Star reports.

EDGE Analysis

Junis was expected to throw several innings Saturday against the Twins but suffered back spasms while warming up and was placed on the injured list. The issue doesn't appear to be too significant, given that he's already throwing at seemingly full strength less than a week later, so it seems as though he won't be out for too much longer.