Fuentes - who pulled home $9 million a year ago as a member of the Angels and Twins - will earn around $5 million per season with Oakland, and will join what looks to be a deep, talented bullpen. Fuentes and Balfour will each set up for closer Andrew Bailey, and will be supported by Michael Wuertz, Jerry Blevins, Craig Breslow, and Brad Ziegler. It's a bullpen without many weaknesses, and as long as it's able to stay healthy, it should help the A's protect a good number of late leads.
The 35-year-old Fuentes racked up 182 saves between 2005-2010 as a left-handed closer with the Rockies and Angels. A midseason trade to Minnesota last year bumped him back to a setup role, which is what he'll continue to do with Oakland, but he nevertheless could and should be highly effective. The southpaw dominates left-handed opposition, having held them to a .607 OPS over his career, but he's also been able to have success against righties as well, leaving him without too large of a platoon split. Used in the right spots, Fuentes should be a real weapon with the A's.