You could almost fill a stadium with the amount of disappointing fantasy football players there have been this season, but each one teaches a lesson that you don't always have to trust the big names in your lineups.
Anyone who drafted Eddie Lacy or C.J. Anderson early definitely knows what it's like to have to mix and match lineups, although this isn't necessarily a bad thing. Relying on early picks often leads to poor games and empty spots in your lineup. Instead you can field a much better team by examining the matchups and trends to give yourself the best possible options.