I think it's pretty much this. At this point, it's pretty apparent that Saito is better than Hawkins (though Hawkins is solid), so he's going to be the go-to pre-setup man. Loe will be the guy if there's a string of righties coming up/we need a ground ball. Hawkins is just sort of caught without a defined role at this point. Saito has been great, so there's no reason to go with Hawkins over him if they are both fresh, Hawkins isn't a specialist, Hawkins isn't a long man, and Hawkins isn't K-Rod or Axford. It's nice to have a guy of his caliber as the "forgotten" man.