2015 NFL training camp: Blocking, aggressiveness key in return game improvement

The Arizona Cardinals were terrible in the return game last season. They were dead last in kickoff returns and, with the exception of one Tedd Ginn punt return touchdown, the punt return game was pretty lackluster.

So what needs to improve this season?

Head coach Bruce Arians discussed it on Sunday after the team's morning walk-through.

"We've got to do a better job of blocking and we've got to get somebody who's just going to pound it, get it out, get it past the 20," he said. "Quit looking for a home run and just get it past the 20 and good things will happen."

The Cards have a few players in the mix for kick returns. We haven't seen any work with kickoff returns, but rookie J.J. Nelson…