So I went with Joba because he was playing yesterday, he was pretty dominant when he was in the pen before, and he is listed as SP/RP in Yahoo!.
All that being said, after seeing his outing last night and the below quote from Rotoworld:
According to Yankees manager Joe Girardi, the team's eighth-inning role is still up for grabs. A shot across Joba Chamberlain's bow? "Right now, our eighth inning is somewhat similar to what it was last year at this time," Girardi said. "No one has really claimed that spot. That's something that will work its way out -- the sooner, the better for us. You'd like to establish that role." Righties David Robertson and Chan Ho Park and left-hander Damaso Marte are additional high-leverage options for New York.Source: MLB.com
I think Gregerson is the safest choice. Joba probably is the probably the man there, but I can see him losing his job pretty easily. Also he didn't get into his role until late going between becoming a potential starter and all. I think he is going to be pretty shaky for a bit.
10 team,H2H,5x5 C-Montero 1B-A.Gonzalez 2B-Utley 3B-Longoria SS-Reyes 1B/3B-Morneau 2b/SS-K.Jonhson OF-J.Upton,CarGo,Pierre UTL-Rasmus P-Hamels,Nolasco,W.Rodriguez,Garza,Wagner,Aardsma BN-Span,Slowey,Liriano,E.Santana,Gregg, Pelfrey, Street DL-B. Anderson