Israel Folau has upped the ante in his fight against Rugby Australia

The former rugby star is now demanding 14 million in damages over the termination of his contract, claiming he could have been a Wallabies captain.

Folau lodged an updated statement of claim in the Federal Court this morning, increasing the amount from 10 million dollars.

His contract was torn up earlier this year, after his social media posts breached code of conduct guidelines.