The Diamondbacks are looking to add an arm or two to the bullpen, and Nick Piecoro of the Arizona Republic thinks the Orioles' Koji Uehara and/or Kevin Gregg could be at the top of the list. The D'Backs don't want to give up any major prospects but have the flexibility to add some payroll, so the two Orioles relievers, who are owed $9.8 million between them next season, could be a fit. Uehara will take more to acquire, but Gregg could come relatively cheaply given his salary for 2012 ($5.8 million) and mediocre production (3.69 ERA, 1.56 WHIP). The A's Grant Balfour could also be of interest, though it doesn't look like Oakland is eager to part with him.