"Fantasy Football Sleepers" is almost a dead term. Those who are really #hardcore about fantasy football know that sleepers don't really exist. The Kansas City Chiefs fifth-string running back undrafted free agent isn't even a fantasy football sleeper because someone, somewhere has written an article about how he is the next big thing. Do I personally think it is a dead term? I don't. What fantasy football players tend to ignore is boring situations that can lead to QB1/RB2/WR2/TE1 potential or team situations where a starting player is viewed as entrenched but is pretty clearly on the downslope of their career.