Boxing 2023: 'Memory issues' force Jeff Horn to officially retire, rejected $1 million Michael Zerafa fight, brain damage
![Tim Tszyu remains undefeated after victory over fellow Australian boxer Jeff Horn | The West Australian Tim Tszyu remains undefeated after victory over fellow Australian boxer Jeff Horn | The West Australian](https://images.thewest.com.au/publication/B881650037Z/1598446074057_GCE2TBO2J.1-0.jpg?imwidth=810&impolicy=wan_v3)
Tim Tszyu remains undefeated after victory over fellow Australian boxer Jeff Horn | The West Australian
![Boxing champion Jeff Horn reveals diet he credits with transforming his fitness ahead of showdown | Daily Mail Online Boxing champion Jeff Horn reveals diet he credits with transforming his fitness ahead of showdown | Daily Mail Online](https://i.dailymail.co.uk/1s/2019/12/22/05/22549760-0-image-a-77_1576992337131.jpg)
Boxing champion Jeff Horn reveals diet he credits with transforming his fitness ahead of showdown | Daily Mail Online
![Manny Pacquiao's defeat by Jeff Horn provoked the hysterical, darker side to boxing | The Independent | The Independent Manny Pacquiao's defeat by Jeff Horn provoked the hysterical, darker side to boxing | The Independent | The Independent](https://static.independent.co.uk/s3fs-public/thumbnails/image/2017/07/03/14/horn-pacquiao.jpg)