Baltimore Oriole Brian Roberts, continuing a major league injury rehabilitation assignment, appeared as a guest Friday on the Norfolk Tides pre-game show from Rochester, N.Y. Entering Saturday’s series opener at Buffalo, the 34-year-old Roberts, out since last May due to post-concussion syndrome, is 3-for-13 with two doubles and two runs scored for Norfolk. With his stint with the Tides, Roberts has now played for an Orioles Triple-A affiliate in three different cities: Rochester, Ottawa and Norfolk.