Dixon left Saturday's preseason matchup with an apparent chest injury and is questionable to return, Jonathan Jones of the Charlotte Observer reports.
In his NFL debut last week, Dixon tallied three tackles against Baltimore. The Washington product has taken reps at both cornerback and safety for Carolina in the early going, but with a lot of uncertainty surrounding Dixon and his injury, it remains to be seen if he'll be able to squeak onto the roster by preseason's end.
Johnson (Achilles) was placed on the Panthers' reserve/NFI list on Monday, Steve Reed of the Associated Press reports.
Johnson also began training camp on the active/NFI list after undergoing offseason surgery to repair an Achilles injury suffered last season with the Patriots. Although no timetable was provided for his return, Johnson could theoretically resume playing after the first six weeks of the regular season.
Cameron (concussion) is inactive for Sunday's Week 7 tilt versus the Bills, the team's official site reports.
Cameron will remain sidelined with the concussion that's prevented him from playing since Week 4. With position mate Dion Sims also out, MarQueis Gray and Dominique Jones will continue to man the position for the Dolphins.
Sims (concussion) is inactive for Sunday's Week 7 tilt versus the Bills, the team's official site reports.
Sims suffered the concussion in last Sunday's victory over the Steelers and did not practice at all this past week. His absence, combined with that of Jordan Cameron's (concussion), leaves MarQueis Gray and Dominique Jones as the Dolphins' tight ends for the Week 7 contest.
Vigil (back) returned to practice Wednesday, the Miami Herald reports.
Although eligible to practice, Vigil remains on the Dolphins' NFI list for the time being. He only participated in individual drills Wednesday, so he likely isn't completely recovered from the back ailment and remains without a definite timeline to return to game action.