The Twins activated 2nd baseman Alexi Casilla from the 15-day disabled list after the game Wednesday night and optioned infielder Trevor Plouffe to triple-A Rochester.  Casilla has been out with a hamstring strain.  Twins Manager Ron Gardenhire says the Twins will activate 1st baseman Justin Morneau off the 15-day disabled list Friday.  Morneau has been out after having neck surgery.  He was hitting .423 with 1 homerun and 8 RBIs in a 6-game rehab assignment at triple-A Rochester.