The role David Johnson will play in the passing game this season as a receiver isn't entirely clear, but that's not a surprise given the way Kliff Kingsbury has tried to vague his way through the offensive conversation since he arrived. But Kingsbury has acknowledged that Johnson will be involved. Thursday before practice he even said that Johnson indeed will line up as a receiver at times because he is that good of a route runner. The question was asked about when the Cardinals go five wide receivers -- so it will be interesting to see if Johnson could ever be used wide in a four-receiver set.

"I know he wants to be as valuable in the pass game as well as the run game," Kingsbury said. "We have to do things he feels comfortable with and play schemes he likes to run the football, and in the passing game, find favorable matchups. He's a tough cover for a linebacker or a safety, he's that dynamic of a route runner."

Johnson hasn't lined up outside a ton in practice -- it happened once or twice Thursday -- and it stands to reason the majority of his catches will be out of the backfield. But as the Cardinals still try and sort through their receiver options, you don't want to rule anything out either.

-- Speaking of receiver, Andy Isabella left practice early with a slight limp after catching a touchdown pass in red-zone work. Hopefully it isn't a big deal. Isabella did have a drop in early one-on-one work, but his quickness in and out of breaks is so amazing. If he is catching the ball consistently, he figures to be a beast of a guy in the slot.

-- It was a relatively rough day for the offense. Kyler Murray had a couple of passes batted down at the line, Patrick Peterson made an interception during 7-on-7, and just in general it didn't seem like things were clicking. Then again, this is about the time camp can drag, and there are going to be days when one of the units is left wanting.

-- That doesn't mean the offense didn't have a couple of highlights. It was fairly effective in the red-zone, with Larry Fitzgerald bringing in a pass from Murray for an eight-yard score, and both Trent Sherfield and Kevin White posting catches they will be proud of during video review.

-- LB Terrell Suggs, T Marcus Gilbert and DT Corey Peters had a vets day off. RB D.J. Foster also wasn't working, and that might just be a reps thing for a player coming off an ACL tear. Foster was running hard Wednesday (and he looked fine walking around.)

-- The Cardinals practice outside tomorrow morning. It is closed to the public.