The Detroit Lions’ secondary is expected to be improved from a season ago. Health is a big factor, as the team was without top cornerback Carlton Davis down the stretch last year. D.J. Reed is viewed as an ideal fit for their defensive style, while Terrion Arnold is expected to take a big leap in his second NFL season. With the team having one of the league’s best safety tandems in Kerby Joseph and Brian Branch, the group should be much better than where they finished last season against the pass.