1.   A former world boxing champion, Wilfred Benitez, began receiving government payments last year in Puerto Rico for what was described as brain injury caused by repeated concussions.

2.   But with the old gray matter comes a gray area about the consequences of repeated concussions and the risk of permanent damage.

3.   If Young never plays again because of repeated concussions, the future is now.

4.   The league began intensive study of concussions and their effects after repeated concussions ended the careers of Jets receiver Al Toon and Bears running back Merril Hoge.

5.   There are no statistics on how many people develop mental problems as a result of repeated concussions.

6.   Two years ago, Al Toon, a Jets wide receiver, had to retire because of repeated concussions.

7.   While experts agree that repeated concussions can cause permanent brain damage and even death, they disagree over the role of heading.

8.   Woozy from repeated concussions, wide receiver Al Toon suddenly retired.

9.   Athletes who receive repeated concussions can develop cognitive deficits.

10.   In a post-game interview, Young appeared lucid and told reporters he does take the issue of repeated concussions seriously.