"You always just have to prepare like it's going to be today," Valdes-Scantling said. "I did the same thing the first week, second week, third week, and it won't change the remainder of the season no matter what happens. I have to go out and play a full game because you never know."

All three rookies have had to adjust to not having Adams or Cobb on the practice field, but Valdes-Scantling said the veterans have gone the extra mile this week to answer any questions about Rodgers and the offense in the meeting room.

While this week has been business as usual for Valdes-Scantling, the absence of the Packers' top three receivers afforded Moore and St. Brown extra reps with the No. 1 offense in practice Thursday.

Moore, a fourth-round pick out of Missouri, played 11 snaps in what marked his first NFL action after Allison left in the third quarter against the Bills. St. Brown has been a healthy scratch the past three weeks after being active in the opener.

"It's easier for 'Quez to gain a little bit more momentum and be down the road a little further just because he's been in there with the first group," offensive pass-game coordinator Jim Hostler said. "The other two have been doing a great job in the limited role they've been going through and getting better. It's just a slower process when you're not in there with the first group and not working with that first unit in games, in that mode."

The rookies know they aren't alone. Beyond the receiving corps, Head Coach Mike McCarthy and offensive coordinator Joe Philbin have a healthy stable of tight ends and running backs to pull from, as well, in game-planning for the Lions.

Green Bay has used a lot of three-receiver sets through the first month of the season, but also incorporated a bevy of packages built around veteran tight ends Jimmy Graham, Lance Kendricks and Marcedes Lewis during training camp.