After being handed the keys to the Dolphins on Monday, Dan Campbell's first real chance to change how the team operates came on Wednesday -- his first practice with the team. When Campbell got the job, previously held by Joe Philbin, he talked about changing "the culture" in Miami.

He started by running the Oklahoma Drill on Wednesday.

According to reporters in attendance, Campbell gathered his players in the middle of the field. He split the team into offense and defense.

Then, the players lined up for the Oklahoma Drill, which involves players going one-on-one against each other and using full contact in a confined space to stop the ball carrier.  

Though the drill is considered a football tradition, some NFL teams no longer use the Oklahoma Drill, due to its physical nature. According to Adam Beasley of The Miami Herald, Philbin never ran the drill. Somewhat recently, the Bengals used the drill during training camp, as Marvin Lewis typically ran it on the first day of camp. However, even Lewis cancelled it the past couple of seasons.

Furthermore, it's rare to see an NFL team run the drill during the season, considering staying healthy can be one of the biggest reasons for success.

But it appears that Campbell is pulling out all the stops as he tries to fix a broken team. Seriously, he's trying everything.

That's a joke, obviously.

The Dolphins' first game under Campbell won't come until Oct. 18, when they travel to Tennessee to take on the Titans. Hopefully, the Oklahoma Drill doesn't damage any of their players in the meantime.

Dan Campbell appears to be trying to make the Dolphins tougher. (USATSI)