This article was originally published on www.si.com/nfl/lions as How Lions' Offense Pushes Jack Campbell to Grow, Improve. Entering his third NFL season, Jack Campbell is undoubtedly one of the focal points of the Detroit Lions’ defense.

Detroit Lions training camp has now progressed to the point where fan will be in the stands. The season ticket holders and VIPs are waiting to catch Saturday's practice, the first one open to anyone outside the immediate Lions den of media or family members.

▶ For the second straight practice, Lions coach Dan Campbell had to stop the session to address physicality from the defense. It began even earlier on Thursday than it did Tuesday, with the primary beef of the day involving a pair of stars: All-Pro wide receiver Amon-Ra St. Brown and Pro Bowl safety Brian Branch.

Alex Anzalone, who wants a new contract from Detroit Lions, took part in walk-through and individual drills Saturday for first time in training camp.