Ya, there is going to be 13 pitchers on this team almost certainly. That means 13 positions players including 8 starters. So that means a 5 man bench and 4 of those spots will be taken by a Catcher, 2 OF'ers and a backup SS. So realistically DD is only competing for the last spot on this team against JVM or a 6th OF'er or a utility guy (i.e. Aquino or whoever else).
Of course if Suarez or someone else starts on the DL that opens up a spot.