A 'can of worms' for HOF voters in Tyrer's candidacy

Jim Tyrer shot his wife to death and then killed himself in 1980 , killing four children.

On Tuesday , nearly a half-century after the murder-suicide, 49 voters will consider letting Tyrer into the Pro Football Hall of Fame .

Recent evidence suggests Tyrer might have suffered from football-related brain trauma long before the idea was introduced.

Tyrer was a dominant force for the Chiefs in the AFL in the '60s and after the merger with the NFL in 1970 .

At 6-6 and 300 pounds, his head was so big it required a custom-made helmet.

He played in 180 consecutive games and started every game of his 11 seasons in Kansas City .

A documentary filmmaker interviewed a doctor who said he treated Tyrer just days before the murder-suicide.

On Tuesday , Borges will advocate on Tyrer 's behalf to the full committee.

Borges sent an email to every voter last week , saying Tyrer was "another of its victims" Several voters were contacted by Bill Polian , a former NFL executive-turned-analyst who has had a vote for several years , a voter says.