Dallas Cowboys defensive tackle Mazi Smith returned to practice after missing a preseason game due to an allergic reaction. Smith experienced the reaction while preparing to travel and spent time in the hospital but is now back on the field. The article also discusses new defensive line additions Jordan Phillips and Carl Lawson, both of whom are expected to contribute to the team's defensive efforts despite recent challenges.

• Mazi Smith is back in practice after a brief health scare.
• Jordan Phillips and Carl Lawson are new additions to the defensive line, with expectations to contribute significantly.