Jamal Lewis talks about concussions

Jamal Lewis is among the former NFL players who said in a federal lawsuit in December that brain injuries have left them struggling with medical problems years after their playing days ended.

In a recent Outside the Lines segment, Lewis discusses how concussions were dealt with differently when he played. "It's all about being tough because this is a tough sport," said Lewis, before losing his train of thought.

Lewis contends that multiple concussions have left him with memory loss, blurred vision, sensitivity to light and headaches.

"You watch the TV, a guy goes down and they pull him out of the game," Lewis said. "You think about: What if they did that with me?"

Lewis, 32, rushed for 10,607 yards in nine seasons (2000-09) with the Baltimore Ravens and Cleveland Browns. His 2,066 yards rushing in 2003 rank behind only Eric Dickerson's 2,105 in 1984 all-time among single-season rushing totals.