Couch threw a few passes during the afternoon session, but with the throws falling far short of the mark, the coaching staff told him to take the rest of the day off.
"He needs some rest," offensive coordinator Tom Rossley told the Milwaukee Journal Sentinel. "Any quarterback who has thrown as much as they've thrown, you have to give them a day off."
With Couch reduced to watching, starter Brett Favre also resting in the afternoon after a busy Saturday night scrimmage and Monday night practice, and Craig Nall out with a pulled right hamstring, veteran Doug Pederson and undrafted rookie Scott McBrien ran the show.
Couch may be limited the rest of the week as the Packers hope to give him significant playing time during Monday night's preseason opener at Lambeau Field against Seattle.
With time getting more desperate with each passing day as he battles Pederson for the third and final quarterback spot, Nall says he's hopeful he'll be able to play against Seattle.
GOOD NEWS, BAD NEWS
The Packers gained one draft pick at practice but received a dose of bad news on three others.
Third-round draft pick Joey Thomas returned after missing nearly a week of practice. On the down side, however, impressive sixth-round pick Corey Williams arrived at practice wearing a cast over his left thumb, which has a strained tendon. Equally impressive seventh-round pick Scott Wells was forced to watch, too, after tendinitis in his left biceps acted up during the Monday night session. Third-round pick Donnell Washington won't be back anytime soon due to an arch injury.
Thomas, an impressive cornerback, was out with a bruised left knee. He acknowledges he's not 100 percent healthy, but it's time to fight through the pain, he said.
"It takes time to heal, and I don't have time," Thomas said.
The Packers didn't have time to wait for Thomas. The coaches inserted Thomas into Al Harris' starting cornerback spot to give him extra reps. Harris took the day off to rest a sore hip.
"He is behind (because of the injury), but we'll get him caught up," Packers coach Mike Sherman said.
Sherman hoped Williams, a defensive lineman, would be able to practice Wednesday, though the cast will remain for a couple weeks. Sherman called Wells, a center-guard, day-to-day. Wells hopes day-to-day means he'll practice Wednesday.
"I can't afford to be out. I'm going to fight it all I can to be out there," said Wells, who may be battling for the last offensive line spot on the roster.
As for the veterans, wide receiver Javon Walker (strained quadriceps) participated in some drills during the Tuesday afternoon session. Sherman is hopeful Walker will be good to go later in the week and will be able to play Monday.
Favre was given the afternoon off and nose tackle Grady Jackson was given the morning off.
The old faces on the list are starting offensive linemen Mike Wahle (knee) and Mike Flanagan (knee), defensive ends Chukie Nwokorie (hamstring) and Ja'Dae McGuire (abdomen), cornerback Chris Johnson (leg), defensive back James Whitley (concussion) and offensive tackle Brennan Curtin (staph infection).