Typically, when setting starting lineups, fantasy football owners are looking for players who consistently give them quality games.
However, every year there are players that owners never know what to expect from them on a weekly basis. These players can have weeks when they go over 30 points in a game and then come back the next week to score three.
These six players are must-starts on most fantasy teams, but they can be studs or duds on any given week.
All point totals based on ESPN standard scoring.