Don't look now, but Dodgers closer Brandon League has allowed an earned run in four of his last six appearances. He's been the antithesis of reliable.
League entered the season as the most evident example of a closer whose setup man (Kenley Jansen) is the superior pitcher, so Fantasy owners anticipated a change at some point. So far, he has yet to put that idea to rest.
I agree with Nando Di Fino that a reliever who's already getting saves, such as Edward Mujica or Jose Valverde, deserves a roster spot over Jansen, particularly if you don't already own League, but Jansen is still as valuable as a setup man can get in Fantasy.