John "JJ" Williams can't remember the day he got married.
The 63-year-old former Waikato representative and Junior All Black can't even remember anything from his playing days in the late 1970s and early 1980s.
He suffered many concussions during his short career and has been told he is likely livingwith the degenerative brain disease chronic traumatic encephalopathy (CTE).
"All those years, I don't even remember the day I got married or my career. It's like another life that existed that I didn't know about," Williams said.
As many as 70 former rugby players could have contributed to the action, including multiple All Blacks, whose lives and livelihoods have been affected by cognitive impairment.
Williams' lawyer has contacted a QC in London about the action, but he doesn't yet know the ins and outs of the situation.
"Then I went farming and I'd go and get the cows and my parents would see there was no one at the shed," Williams said.
"I'd be in the paddock, sitting there if something went wrong like if there was a sick cow or something not right, I'd freak out and sit there.
"I don't know what I did. My parents didn't know what the matter was, nobody sort of knew."
The only stuff he knows about his own rugby career is through newspaper clippings his mother left for him.
"I feel embarrassed about what happened to me and the trouble I caused from all of that. At the time, you just can't explain it," Williams said.
However, he says a great weight was lifted off his shoulders after tests by a neuro-psychologist indicated he had CTE.
CTE can only be definitively diagnosed post-mortem so Williams has notified his family that he wants to donate his brain for testing.
"It's a hell of a relief [once you know]," Williams said.
"There must be hundreds of blokes out there who are going through this, the same trouble that they don't know why. They should go and talk to somebody about it."
"From what I understand, it's a pretty ever-growing list of [players]. I think it's going to be something quite substantial that's going to come from it," said Hayman, a 45-test tighthead prop.
Hayman, 41, said he was contacted and offered scans and tests to ascertain the damage he'd suffered over the course of a career where he played in New Zealand, England and France. He declined the offer to undergo testing.
The action is being readied by lawyers in Britain and will likely target several national rugby bodies within that jurisdiction. Herald sources indicate it will argue that rugby authorities have known about, and subsequently underplayed, the risks associated with repetitive head injuries for decades.