The Lions and Chargers are the first two teams to open training camp and play the NFL's exhibition opener later this month in the Hall of Fame game.

With NFL training camp season upon us, Kevin Patra provides a refresher on the Detroit Lions' roster changes, position battles and notable subplots.

The Lions will also have the benefit of 2025 first-round pick Tyleik Williams having the ability to play the nose tackle position in certain packages as well. However, he could be better suited to play a three-technique with Onwuzurike out. Martin is facing a pivotal training camp, while Smith has proven to be reliable when called upon in a pinch.