I guess Rauch could be the better option, given that he's done it before and his relatively low HR/9 number compared to Guerrier. He also tends to strike out more batters which is what you look for more often in a closer. Guerrier had a good year last year, it's too bad if they don't give him an opportunity.
P-Baker, Gregerson, Meche
DL - Zimmerman, Volquez