Running back: Starting with minicamp, the candidates will be microscoped. Devin Singletary, a third-round pick in 2019, has teased us with his speed and elusiveness, but has been decidedly inconsistent. Zack Moss, a third-rounder a year later, hasn’t shown much and the Bills rolled the dice again in April using a second-round pick to take James Cook, a back who supposedly owns superior pass catching skills. That’s a lot of draft capital spent on three players at virtually the same position. Also in the mix are free agent Duke Johnson and special teams standout Taiwan Jones. What concerns the Bills is that Allen has been the team’s second-leading rusher in yards and his average of eight rushing TDs per season is the same as Singletary and Moss combined.’