I'm sure it was that they were running pretty even and by all accounts Haener has looked solid in practice. I think I mentioned in the last AMA that I was slightly in favor of giving the start to Haener. Rattler got the start when Carr went down earlier in the season and struggled quite a bit (he's a rookie, it's understandable). I was of the feeling that Haener has been kind of overlooked to this point and there was no harm in starting him.