Berkman is on the disabled list with soreness in his right knee, which has already been operated upon this year. That surgery cost Berkman nearly two months of the season, and, after a brief return to the club, Berkman has been back on the DL since Aug. 3. His absence shouldn't be as long this time, but the inclusion of a Minor League rehab stint is a change.
Berkman, with the Cardinals' consent, chose not to go to the Minors before coming off the DL in July. Berkman then went 6-for-33 upon that return.
Cognizant that neither of his knees will be 100 percent this year, Berkman is progressing enough to put him in position to at least help the Cardinals off the bench for the season's final month. He has resumed swinging, and he was out playing catch again on Friday.
Though Berkman estimated that he'll spend about a week with Memphis, it's likely that the Cardinals will wait until rosters expand on Sept. 1 before activating him. That would eliminate the need for another roster move.