Twins' catcher Joe Mauer will play 3 innings at catcher at extended spring training in Fort Myers, Florida today as part of his rehab from leg weakness and a shoulder injury.  The Twins have a timetable for Mauer's return but they are not announcing it.  Mauer has been out since Mid-April.  Drew Butera and Rene Rivera are filling in for Mauer at catcher for the Twins.