Chris Borland has retired from the NFL over concerns about head injuries.
http://espn.go.com/espn/otl/story/_/id/12496480/san-francisco-49ers-linebacker-chris-borland-retires-head-injury-concerns
Seems like a lot of these young guys are retiring early.
http://espn.go.com/espn/otl/story/_/id/12496480/san-francisco-49ers-linebacker-chris-borland-retires-head-injury-concerns
Seems like a lot of these young guys are retiring early.