Smith had an MRI performed after he left practice early on Monday, a person familiar with the situation told The Dallas Morning News.

Dallas Cowboys defensive tackle Mazi Smith left practice early on Monday because of an apparent lower-body injury

Dallas Cowboys head coach Brian Schottenheimer has made it clear that he intends to change the culture, and he's also clear on the level of discipline he wants his team to maintain. Dak Prescott and CeeDee Lamb have praised Schottenheimer for not taking discipline lightly,

Unfortunately the Cowboys received some more bad news once practice got underway as defensive tackle Mazi Smith left practice to head into the injury tent. Smith would go on to leave the tent and exit the practice field entirely.