Cabrera (hamstring) likely won't begin a rehab assignment until High-A Lake Elsinore begins its postseason Wednesday, Jeff Sanders of the San Diego Union-Tribune reports. Cabrera was expected to return to the Padres when rosters expand Sept. 1, but the team elected to push back his rehab assignment a couple of days to aid his recovery. Alexi Amarista will hang on to the starting shortstop job a little longer as a result, but Cabrera could reclaim those duties by the weekend, once he gets a few at-bats in the minors.