On Sunday, "Outside the Lines" will examine the journeys of two men who have become unlikely partners in the common belief that brain damage from repeated concussions in football can lead to depression, dementia and suicide. One is a former pro athlete whose career was ended by concussions; the other is a doctor who worked on the autopsies of two former NFL players.
In addition, "Outside the Lines" takes a close look at Mark Lovell's ImPACT test and its use by the NFL, and explores whether it is good science to have a member of the league's concussions committee analyzing data and helping set policy using a product in which he has a financial interest.
Guests include Garrett Webster, the son of late former NFL center Mike Webster; and ESPN The Magazine's Peter Keating. "Outside the Lines" is hosted by Bob Ley. Tune in Sunday at 9:30 a.m, ET, on ESPN.