DAVIE, Fla. -- Miami Dolphins quarterback Matt Moore returned to practice and took the majority of snaps Thursday after being sidelined with a mild concussion, but interim coach Todd Bowles said he'll wait until game day to decide who starts Sunday at Buffalo.
If Moore doesn't play, former Bills quarterback J.P. Losman will make his first start for the Dolphins.
Also back at practice was Pro Bowl left tackle Jake Long, who missed most of Sunday's game with a back injury. He practiced on a limited basis. Still sidelined was linebacker Koa Misi with a shoulder injury.
Moore left the Dolphins' loss Sunday to Philadelphia midway through the second half and was replaced by Losman. Moore was cleared to rejoin practice after undergoing tests Wednesday.
"Nice to get back in and get reps, get ready for Buffalo," Moore said. "If I'm ready to go, I'm excited for the opportunity."
Moore said he had his first concussion last year playing for Carolina. When asked how he felt after being hurt Sunday, he said, "A little banged up, obviously. Feeling good now, and that's the most important thing."
Moore ranks 12th in the NFL in passing. In nine starts this year he has 10 touchdown passes and five interceptions.
Bowles said he wants to make sure Moore's fully healthy before returning to action.
"I'm going to wait until Sunday to decide whether he dresses," Bowles said. "We've just got to see him throw the ball around some and how much can he grasp in the game plan. All of that plays into it."
A decision about Long also will be made Sunday, Bowles said. Long has yet to miss a start in his four-year career.