10 team 5x5 Roto Dynasty League. Saves are pretty scarce in this league as a lot of the top set up men are already rostered, especially by the bottom tier teams as trade bait if they become closers. I've already got Mike Adams and Vinnie Pestano rostered, but my only legit source of saves right now is Mariano Rivera. Trades will be an option at some point in the year but right now people are going to be asking for Martin Perez+extra for a mid-tier closer like Chris Perez or Jordan Walden.
Right now I have Alexi Ogando as the last man on my pitching staff. Are any of these guys an upgrade for this situation?