1.   He suffered his sixth career concussion in October at Arizona.

2.   It was at least the sixth concussion Hostetler has suffered.

3.   It was the sixth concussion of his career.

4.   LaFontaine retired late last season after his sixth major concussion.

5.   Patrick is back in Flames uniform after missing two games with the sixth concussion of his career.

6.   Lindros has not played since sustaining his sixth concussion in just more than two years.

7.   Lindros, a restricted free agent, has been cleared to resume playing nearly six months after his sixth concussion.

8.   Lindros, now a restricted free agent, is recovering at home in Canada from his sixth concussion.

9.   Lindros, still recovering from his sixth concussion, was examined recently by Dr. James Kelly, a neurologist in Chicago, and an independent doctor in Montreal.

10.   Lindros has been cleared to resume playing nearly six months after his sixth concussion.