I like Fitts, but they don't trust him to go longer than 4 innings no matter how well he's throwing. Not a great fit for this bullpen right now. Criswell had a nice start for BOS last time, but he's carrying a much higher ERA in WOO this season. It's likely that the BOS start was a little bit of luck. Tolle is also going to hit an innings limit at some point, so he's less likely of an option than Fitts or Criswell. Harrison has an obscene walk rate and shouldn't be an option IMO. Uberstine would be more of a relief option. Connelly Early has pitched great everywhere this season, but I don't think the Sox would consider him for a spot until the second half of next season.