PHILADELPHIA (AP) — More than 200 former players or their families have opted out of the proposed settlement of NFL concussion claims, a small fraction of the retirees who are covered by the deal.

That’s according to court documents filed Monday.

Retired players who opted out of the proposed class-action settlement may pursue individual lawsuits against the NFL, but they presumably will have to show their brain injuries resulted from concussions suffered while they were playing for the league.

The NFL has agreed to pay at least $765 million over 65 years, and more if needed, to address claims the league failed to properly treat on-field concussions.

More than 99 percent of those who would be covered by the deal have agreed to take part.