Fantasy Upside
Even though he's primarily a blocking tight end in the Rams' offense, Lance Kendricks still caught four touchdowns in 2013, which matched his TD production from 2012. If Jared Cook were to suffer an injury, Kendricks would have an increased role in the passing offense.
Fantasy Downside
Kendricks' touchdown total stayed the same but he caught 10 fewer passes for 261 fewer yards last season after the Rams signed Cook in free agency. While the team does like to throw to him in the flats and inside the red zone, Kendricks' fantasy potential will always be limited by his role and his skill set.
Bottom Line
Avoid Kendricks in your drafts. Even if Cook were to suffer an injury, Kendricks' role will remain limited in the passing game and he's unlikely to improve upon his TE33 finish in 2013. He shouldn't even be considered as a TE2.