Can my relief pitcher be used as a starter (they were originally in the SP draft list, but they have only been used in relief roles so far in real MLB)?

Once again, this question is similar to the preceding two questions.  Even though you might have a traditional starter on your roster, if he hasn't started a game in real MLB, you cannot use him in that capacity.  Take John Smoltz in 2002. He had been a career starter, but was moved to the closer's role that season.  If you drafted him hoping to use him as a starter, you would have been out of luck, because he never started a game in 2002. However, you would also have gotten a very good relief pitcher in that deal, and you could have used every one of his relief appearances for your BBM team.