Orioles manager Dave Trembley confirmed that second baseman Brian Roberts received another epidural on his lower back today after an MRI didn't reveal any new information. Roberts has been told to rest for four or five days before attempting to work out. He'll probably go on an injury rehab assignment before being activated from the disabled list. The question is, when will Roberts be ready? And are we back to worrying more about his back? What about the strained abdominal muscle? Fifteen days won't be enough. Roberts received his first epidural on March 15 after flying back to Baltimore.