Lions' Jack Campbell getting 'better and better' as training camp rolls on

Allen Park — Each of the three linebackers vying for a starting job next to Alex Anzalone continued to trend upward in Friday night's preseason game against the New York Giants, but Detroit Lions rookie Jack Campbell may have had the best preseason debut of any defensive rookie in the league.

That's where things sit heading into Week 2 of preseason, and a pair of joint practices against the Jacksonville Jaguars.

"I thought he was physical. I thought he saw it. There's things, as he goes, just (needs to cut) it loose," head coach Dan Campbell said. "Like, he sees it, now pull the trigger just a little bit faster. He's a smart player and every time that he goes against that environment, he'll…