The pressure is on incoming Star boss Robbie Cooke to show he can reform Australia’s largest publicly listed casino group and restore regulator trust as he leaves behind flagging payments play Tyro, whose share price has fallen nearly 80 per cent this year and which has become one of the ASX’s worst performers.

Tyro shares fell 15 per cent to 66¢ on Wednesday on news that Mr Cooke was leaving, wiping about $60 million from the company’s market value.