Peyton Manning was king of the audible, and naturally, Mike McCoy gave him free reign to change plays when the pair worked together for the Broncos in 2012. Veteran quarterback Philip Rivers had similar latitude when working with McCoy in San Diego from 2013-16.

Josh Rosen is only a few months into his NFL job, but McCoy, in his first year as Cardinals' offensive coordinator, is not drastically cutting back that freedom for the rookie. Rosen said he is allowed to make checks at the line when he thinks it will benefit the offense.

"The headset cuts off at 15 seconds, so he can't say everything, and he doesn't have the perspective from the sideline or ground level that you do from behind the center," Rosen said. "… He wants us to be able to try to fix things here and there."

Rosen took a delay of game penalty for the second time on Friday against the Saints, but overall, it seems like he has a nice feel for the chess match at the line of scrimmage. At only 21 years old, Rosen should continue to progress as he gains NFL experience.

Meanwhile, veteran Sam Bradford has looked completely at ease in the Cardinals' offense throughout training camp, even though it is his first year with McCoy. When the defense shows a coverage Bradford doesn't like, he will calmly audible.

"I've seen most of the plays we're running, or run some form or variation of that play," Bradford said. "In my head I kind of have a group of plays I'd like to get to versus certain coverages, versus certain blitzes, and we have most of those in this offense. Being able to go up there and get to some of those, it has come pretty natural."