From "Tigers Designate Galarraga For Assignment" at MLBTR:
One day after agreeing to terms with him on a $2.3MM contract for 2011, the Tigers have designated Armando Galarraga for assignment. The team announced the move on Twitter, while making its deal with Brad Penny official.
And Galarraga's being replaced by Brad Penny, who's dating some "Dancing with the Stars" babe. There is no justice in the world.