Casey Janssen (back) will begin a rehab assignment with High-A Dunedin on Monday. While he will report to the team Monday, it might not be until Tuesday when Janssen gets into a game. He's expected to need 2-3 appearances before being activated, which could come by the end of this week. It's not clear whether Janssen will immediately get his closer job back or if Blue Jays manager John Gibbons will ease him back into things.