I think the Angels carry 4 starters for the first week of the season. Whoever the 5th starter is, he should get one start at AAA before being called up for a start at Texas. Then, when Richards is ready, a decision can be made between sending down Trop/Heaney or sending a bullpen arm down and dropping Santiago down to the bullpen. Of course, this could all change depending on how everyone performs this spring.