Questionable Roster Moves

Sometimes MLB General Managers do puzzling thing (ie. sign Adam Eaton to a 3 year $24M deal or allow Milton Bradley to be in your team's clubhouse). Here are some examples of questionable roster moves made within the past week.Detroit Tigers:Starting pitcher Brad Penny is added to the 40-man roster while starting pitcher Armando Galarraga is dropped a day after signing a $2.3M contract.The 29 year old Galarraga is a league average starting pitcher with a lower base salary than Penny ($3M, plus another $3M in incentives) and has been more durable over the past few seasons. It is strange that the Tigers would pay Penny to do what they were already getting from Galarraga at a cheaper price. Penny has a bigger upside if healthy, but coming off a season in which he made only 9 starts, health is anything but guaranteed.Furthermore, Galarraga's omission from the 40-man roster is also a mystery when you consider they opted to keep 30 year old no-hit outfielder Don Kelly aboard. Stra...