Detroit Lions head coach Dan Campbell addressed the media Wednesday morning and it was a pretty informative session updating some injuries and talking about the matchup Sunday vs. the Los Angeles Rams.

Here are my biggest takeaways from that media session:

1. There's still a chance we see veteran defensive lineman DJ Reader make his Lions debut Sunday after missing all of training camp rehabbing a quad injury.

"This week was really what we had circled to get him the bulk of true football," Campbell said. "We had him do some team defense but also run scout team too to go against (center) Frank (Ragnow) and (guard) Graham (Glasgow) and (guard Kevin) Zeitler and just get his confidence up."

Campbell said they are taking it day-by-day and he'd know a lot more after Thursday's practice (players are off Wednesday). That would obviously be a big boost to Detroit's defense if Reader is able to go Sunday night against a patchwork Rams offensive line coming to Detroit.

"He's doing well," Campbell said of Reader.

2. Former Lions guard Jonah Jackson signed a big free-agent contract with the Rams in the offseason and will make his first appearance back at Ford Field on Sunday, potentially playing center because of some shuffling the Rams have had to do preparing for this matchup due to suspensions and injuries up front.

Campbell said they've had to change a number of calls because of Jackson's knowledge of Detroit's offense but it's nothing they haven't had to deal with before. Campbell mentioned quarterback David Blough being signed by Minnesota in 2022.

It's simply changing some language and code words. Campbell said they aren't going to overthink it.

3. These two teams just played last January but Campbell thinks this is a better version of the Rams coming to town Sunday than the one they saw in the Wild Card game. Even though future Hall of Fame defensive tackle Aaron Donald retired this offseason, Campbell thinks the infusion of young talent there with players like Jared Verse and Braden Fiske makes them younger and collectively hungrier with a very higher motor as a collective group.

Campbell also mentioned the offensive line being better with the addition of Jackson, the secondary being improved and the running back group being better with the addition of Blake Corum to go along with Kyren Williams.

4. Lions first-round pick Terrion Arnold will make his NFL debut Sunday night. Campbell said Arnold is ready to go and is not lacking any confidence. Arnold will also not be limited to just one side of the field, either the boundary side or field side, per Campbell. That will give defensive coordinator Aaron Glenn some options between Arnold and veteran outside cornerback Carlton Davis III.

5. Second-year running back Jahmyr Gibbs talked to the media Tuesday and said he's ready to go after missing a couple weeks with a hamstring injury.

Campbell made an interesting point about Gibbs' injury, saying they are encouraging him to motor up to top speed at least once every practice to help avoid injury.

"Here's the trick with Gibbs," Campbell said. "And we tell him this. Everyone top to bottom tells him this. When you can run like he runs, I mean this guy can run, if you don't touch that speed in practice at least once or twice a day you set yourself up for something to happen on Sunday.

"You're a guy that runs 22 miles per hour you better touch it because the first time you touch it in a game when somebody is coming after you and you're running away, that's when bad things happen."

Campbell said the trick has just been educating Gibbs on that philosophy and making him do that in practice so he doesn't have a setback. They've been doing it ever since he got back.

6. Campbell has been featured recently in an Applebee's commercial. He said he was reluctant to take part but did enjoy filming the commercial and said his wife Holly and daughter Piper talked him into it.

He said there is more to come on the commercial front but didn't go into specifics.

7. The Lions moved Brian Branch to safety this year but that's not the only spot we'll see the talented second-year defensive back play. Campbell said he likes where Branch is at heading into the season and they expect him to play both safety and nickel in Glenn's defense.