Meanwhile, regular starting quarterback Vince Young was limited in practice, is listed as questionable on the injury report with an ankle injury and will be a game-time decision Sunday at Miami.
“He'll probably be a game time decision. We'll warm him up and see how he is,” Titans coach Jeff Fisher said.
Regarding other injuries, defensive tackle Tony Brown practiced fully for a second straight day after changing his rehab habits and is probable. Running back Chris Johnson is probable with a thigh injury and has practice fully all week. Cornerback Ryan Mouton is questionable with a hamstring but has worked fully all week. Receiver Kenny Britt continues to be out with his hamstring injury.
Also, linebacker David Thornton was backed down on Friday as he makes his way back from a hip injury that landed him on the PUP list at the start of training camp.
As for which quarterback will play Sunday against the Dolphins, Fisher
“He took half the reps yesterday, and we just backed him down. He did take some starter reps today,” Fisher said.
Collins said getting the bulk of the reps this week will be beneficial in both working with Moss, who was picked up off waivers from Minnesota during the bye week, and in executing the game plan.
“I'll be ready to go. I got a bunch of reps this week, and if I get the call I'll be ready,” Collins said. “Anytime you get to go out there and actually run the play, it definitely helps. Whatever my role is gonna be this weekend, I'll be ready for it.”
As for working extra with Moss, Collins said he just wanted help the receiver get up to speed as much as possible.
“He came in here and he had so little time. We just needed some extra time to work on a couple of things that we didn't really get to touch on as much as we would like during the week,” Collins added.
Brown switched his training regimen, because swelling on his surgically repaired knee was also causing problems the strength in his quadriceps muscle.
"The different type of stuff I was doing, as far as switching my regimen up, really helped me," Brown said. "I was able to practice two times in one week. I was hurting just going up and down steps and doing small little things."