They're managers' favourites, but nobody else can quite figure out how they came to occupy such an important role in their side.
Such players are common around the footballing world and often draw the ire of their respective supporters for their repeated below-par showings.
One such player this season has been Manchester City's Martin Demichelis who, while not as bad as many reports have suggested, is simply not at the level that would be hoped for at a club with City's ambitions.
However, he is a long-standing favourite of manager Manuel Pellegrini.
Who joins Demichelis in being selected in spite of their on-pitch displays? Bleacher Report takes a look.