yeah. >> reporter: naze davenport is a coplaintiff with henry. have convenient port, a former nfl running back, played seven seasons, mostly for the green bay packers, before retiring in 2008. >> after the nfl you were experiencing memory loss, had some anger issues. how had you changed from playing in the nfl to after? >> i was never a quick fighter, i was more a happy go lucky guy. i was getting in trouble, getting in fights, getting in confrontations. >> reporter: when davenport learned there might be money available for treatment, he sought the help of dr. charles golden, another neuropsychologist working with the nfl. dr. golden says he did not use the race-based demographic correction. >> was your understanding that the correction was required? or that it was recommended? >> no, it was -- at least when they talked to me, it was clearly just recommended. when i was hired to do this, i asked them. i said, do i have to use a certain set of norms? and they said, basically, no, you have a choice, and it's up to your clinical decision. >> in your