Per the Heater; Jake McGee, Wade Davis, and Dale Thayer.
I've changed my stance on Thayer since StatCorner's minors section launched and alerted me that Thayer got quite a good chunk of swinging strikes (11.5%). The "book" on him was that his stuff was marginal. My apologies to all those who were Thayer backers since the beginning who I, foolishly, took a scouting view on.
McGee will miss part of (if not most) of 2009 recovering from UCL/Tommy John surgery. Upon his return some indications have been that he'll slide into a relief role down the road, but for now who knows. Davis could be the man to knock Andrew Sonnanstine out of the rotation. Timetable unknown.