Dr John Mayhew: Former All Blacks doctor on legal action against World Rugby over failure to protect against head injury - Heather du Plessis-Allan Drive

The lawsuit against World Rugby over brain injuries has been launched today.

More than 100 former players are taking legal action, including all black Carl Hayman who revealed he has early on-set dementia last year.

The players allege there was a failure to protect them.

Former All Blacks doctor Dr. John Mayhew joined Heather du Plessis-Allan.

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