It's difficult for an undrafted free agent to make a 53-man NFL roster. It's almost impossible for one of these unheralded rookies to break out and shine in fantasy football. Despite the long odds they face, there have been some recent examples of undrafted talent who went on to make fantasy waves. Jaylen Warren, Jakobi Meyers, Rashid Shaheed, Rico Dowdle, Juwan Johnson and Jordan Mason are amongst the best active players who didn't hear their name called during a draft.