Andre Roberts: 'I've hit rough patch'

Arizona Cardinals wide receiver Andre Roberts has admitted that he is struggling with a rough patch of form.

Roberts received for eight catches in the season opener but has since failed to hit the same heights, and he said that he is working hard in training.

"To go from eight catches in one game to one-catch games, no-catch games, that's tough," Roberts told the club's official website.

"I'm just really trying to work through that and understand my role."

Roberts has played for the Cardinals since 2010.