Starting WR 2? Dez/Sanders/Shepard

I need to start one of these scrubs Week 13.

Dez - the premier underperformer going up against Josh Norman.
Sanders - the second best WR on the horrible Broncos with a QB platoon.
Shepard - the best WR of the bunch this year plagued by Geno Smith, the destroyer of dreams.

Who do I roll out as my WR2?