Rookie Tyrann Mathieu to start for Rashad Johnson vs Dallas Cowboys

With injuries mounting in the secondary for the Arizona Cardinals, a rookie will get to start on Saturday against the Dallas Cowboys in Glendale when the team has their preseason home opener. It happens to be the rookie that everyone is talking about too -- safety Tyrann Mathieu.

Starting free safety Rashad Johnson suffered a knee and ankle sprain on Monday's practice at University of Phoenix Stadium when he broke up a pass. He is currently listed as day-to-day, head coach Bruce Arians told the media (via Arizona Sports) that they would be cautious with Johnson in bringing him back, saying that "he has had a great camp."

What that means, though, is that Mathieu will get the start. He was the star of the team's 17-0 win over the Packers in their preseason opener. He also has been making plays almost every single day in practice.

Remember, the "Honey Badger" had not played football in a year because he was kicked off the team at LSU for off the field issues. He is impressing everyone more and more each day.

There is already talk that perhaps Mathieu will play in a way that will keep Johnson off the field even when healthy. While he is very young and still learning the position, Mathieu has shown flashes that it could happen. As for Johnson, what would be more likely is that he would then battle Yeremiah Bell for playing time as well at strong safety, as Johnson can play both safety positions.

Are you ready for this train to start going? It has already started. Whether it will end in a wreck this weekend or if it will pick up speed, it will be something you have to see.

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