I bet Dotel. Francisco is injured and although Rauch has a shot to get the saves early, there is no guarantee he will stick.
The only way Gregerson gets saves is if Bell gets injured. And frankly, there is no guarantee they wouldn't go to Mike Adams first in that case.
In my fridge: Founders Kentucky Breakfast Stout (KBS), Central Waters Peruvian Morning, Bell's Batch 10,000, Dale's Pale Ale, Capital Brewery Amber, New Glarus Moon Man, and Guinness.