Baltimore Ravens running back Alex Collins acknowledged that he's wearing a dark visor on his helmet to help his long-time migraine battle.
"I would get a little slight headache here and there, but for the most part, from wearing a dark visor, it does a good job," Collins said. "I have it in practice, and I am able to run full speed out there."
Collins, the Ravens' leading rusher this season, got approval from the league during the preseason to wear the visor.
He still deals with the severe headaches occasionally.