Closer is a volatile role in Major League Baseball, and thus, fantasy baseball. If a closer is injured, loses his job or is traded, his understudy is fantasy-worthy immediately, if he wasn't already. Be mindful of lurkers - pitchers with the skills, profile or backing and might have a shot at save opportunities, eventually.

KFFL.com's closer depth charts let you know who might be the next fantasy baseball sleeper for saves. Stay up to date on bullpen situations throughout the regular season with KFFL.com's Fantasy Baseball Closer Hot Seat and MLB Hot off the Wire.

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AL East

AL Central

AL West