The Ravens announced Monday that veteran Chris Johnson has been released from the team.
Johnson returned to practice Saturday and said he had migraine headaches for two months, missing six days and a preseason game.
"It was a long six days," Johnson said Saturday." It felt good to be back out there with the fellas. I had the migraines for over a week and a half, and they were just taking precautions as far as me doing any hitting.
"If you get a concussion when you have a migraine, you don't know where it starts from. They were being safe with me. I appreciate it, and now I'm back out here."
With the minimum salary benefit, Johnson carried a $620,000 salary-cap figure. Johnson's $905,000 contract for 2013 included $35,000 with a signing bonus, and no other guarantee.
Johnson, 33, a former Oakland Raider starter, joined the Ravens last season. He had seven tackles and one forced fumble and was signed to a one-year contract prior to free agency.