Australian boxing legend Jeff Fenech has pledged to donate his brain to the Australian Sports Brain Bank for research into the concussion-related condition chronic traumatic encephalopathy.

Fenech is one of the greats of the sport, winning world titles in three weight divisions, and is an inductee into the International Boxing Hall of Fame. The 55-year-old, who is training Jack Brubaker ahead of his fight against fellow Australian Tim Tszyu on Friday, has recently gone public about the blackouts and memory lapses that have concerned him and his family.

Former world champion Jeff Fenech wants to help further research into the area of head knocks. Credit:Getty Images

“There have been some things that I am embarrassed by," Fenech told the Herald. "I’ve walked out of a couple of restaurants, walked out of shops and had to go back and pay afterwards.

“I’ve had appointments and gone on the wrong date. I don't feel comfortable with that.